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Class 11 Mathematics Medium Quiz

Level 32 • 50/50 questions • 35 seconds per question.

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Time Left 29:10 35 sec/question
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फलन (f(x)=\sqrt{x+1}+\frac{1}{x-2}) का डोमेन क्या है?

What is the domain of (f(x)=\sqrt{x+1}+\frac{1}{x-2})?

Explanation opens after your attempt
Correct Answer

A. \([-1,\infty\)\setminus{2})

Step 1

Concept

The square root needs \(x+1\ge 0\) and the denominator needs \(x-2\ne 0\). Hence the domain is \([-1,\infty\)\setminus{2}).

Step 2

Why this answer is correct

The correct answer is A. \([-1,\infty\)\setminus{2}). The square root needs \(x+1\ge 0\) and the denominator needs \(x-2\ne 0\). Hence the domain is \([-1,\infty\)\setminus{2}).

Step 3

Exam Tip

वर्गमूल से \(x+1\ge 0\) और हर से \(x-2\ne 0\) चाहिए। इसलिए डोमेन \([-1,\infty\)\setminus{2}) है।

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फलन (f(x)=\frac{\sqrt{5-x}}{x+3}) का डोमेन क्या है?

What is the domain of (f(x)=\frac{\sqrt{5-x}}{x+3})?

Explanation opens after your attempt
Correct Answer

A. (\(-\infty,5]\setminus{-3}\)

Step 1

Concept

The square root needs \(5-x\ge 0\) and the denominator needs \(x+3\ne 0\). In exams take the intersection of both conditions.

Step 2

Why this answer is correct

The correct answer is A. (\(-\infty,5]\setminus{-3}\). The square root needs \(5-x\ge 0\) and the denominator needs \(x+3\ne 0\). In exams take the intersection of both conditions.

Step 3

Exam Tip

वर्गमूल के लिए \(5-x\ge 0\) और हर के लिए \(x+3\ne 0\) चाहिए। परीक्षा में दोनों शर्तों का प्रतिच्छेद लें।

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फलन (f(x)=\sqrt{x-2-9}) का डोमेन क्या है?

What is the domain of (f(x)=\sqrt{x-2-9})?

Explanation opens after your attempt
Correct Answer

A. (\(-\infty,-3]\cup[3,\infty\))

Step 1

Concept

The expression inside the square root must satisfy \(x^2-9\ge 0\). From \(x^2\ge 9\), we get the outer intervals.

Step 2

Why this answer is correct

The correct answer is A. (\(-\infty,-3]\cup[3,\infty\)). The expression inside the square root must satisfy \(x^2-9\ge 0\). From \(x^2\ge 9\), we get the outer intervals.

Step 3

Exam Tip

वर्गमूल के अंदर \(x^2-9\ge 0\) होना चाहिए। \(x^2\ge 9\) से बाहरी अंतराल मिलते हैं।

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फलन (f(x)=\frac{1}{\sqrt{16-x-2}}) का डोमेन क्या है?

What is the domain of (f(x)=\frac{1}{\sqrt{16-x-2}})?

Explanation opens after your attempt
Correct Answer

A. ((-4,4))

Step 1

Concept

The square root is in the denominator, so \(16-x^2>0\) is required. In exams do not include equality for a denominator square root.

Step 2

Why this answer is correct

The correct answer is A. ((-4,4)). The square root is in the denominator, so \(16-x^2>0\) is required. In exams do not include equality for a denominator square root.

Step 3

Exam Tip

हर में वर्गमूल है इसलिए \(16-x^2>0\) चाहिए। परीक्षा में हर वाले वर्गमूल में बराबरी शामिल न करें।

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फलन (f(x)=\frac{x-4}{x-2-16}) का डोमेन क्या है?

What is the domain of (f(x)=\frac{x-4}{x-2-16})?

Explanation opens after your attempt
Correct Answer

A. \(\mathbb{R}\setminus{-4,4}\)

Step 1

Concept

The denominator is (x-2-16=(x-4)(x+4)), so \(x=\pm4\) are excluded. In exams apply restrictions from the original denominator before cancellation.

Step 2

Why this answer is correct

The correct answer is A. \(\mathbb{R}\setminus{-4,4}\). The denominator is (x-2-16=(x-4)(x+4)), so \(x=\pm4\) are excluded. In exams apply restrictions from the original denominator before cancellation.

Step 3

Exam Tip

हर (x-2-16=(x-4)(x+4)) है इसलिए \(x=\pm4\) हटेंगे। परीक्षा में काटने से पहले मूल हर की रोक लगाएं।

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फलन (f(x)=\frac{x+5}{x-2-x-20}) का डोमेन क्या है?

What is the domain of (f(x)=\frac{x+5}{x-2-x-20})?

Explanation opens after your attempt
Correct Answer

A. \(\mathbb{R}\setminus{-4,5}\)

Step 1

Concept

The denominator (x-2-x-20=(x-5)(x+4)), so \(x\ne5\) and \(x\ne-4\). In exams factorize the denominator.

Step 2

Why this answer is correct

The correct answer is A. \(\mathbb{R}\setminus{-4,5}\). The denominator (x-2-x-20=(x-5)(x+4)), so \(x\ne5\) and \(x\ne-4\). In exams factorize the denominator.

Step 3

Exam Tip

हर (x-2-x-20=(x-5)(x+4)) है इसलिए \(x\ne5\) और \(x\ne-4\)। परीक्षा में denominator को गुणनखंड करें।

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फलन (f(x)=\sqrt{x-2}+\sqrt{9-x}) का डोमेन क्या है?

What is the domain of (f(x)=\sqrt{x-2}+\sqrt{9-x})?

Explanation opens after your attempt
Correct Answer

A. ([2,9])

Step 1

Concept

The two conditions \(x-2\ge0\) and \(9-x\ge0\) together give \(2\le x\le9\). In exams take the common interval for two square roots.

Step 2

Why this answer is correct

The correct answer is A. ([2,9]). The two conditions \(x-2\ge0\) and \(9-x\ge0\) together give \(2\le x\le9\). In exams take the common interval for two square roots.

Step 3

Exam Tip

दोनों शर्तें \(x-2\ge0\) और \(9-x\ge0\) मिलकर \(2\le x\le9\) देती हैं। परीक्षा में दो वर्गमूल हों तो common interval लें।

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फलन (f(x)=\frac{1}{x-2-4x+5}) का डोमेन क्या है?

What is the domain of (f(x)=\frac{1}{x-2-4x+5})?

Explanation opens after your attempt
Correct Answer

A. \(\mathbb{R}\)

Step 1

Concept

The denominator (x-2-4x+5=(x-2)2+1) is never (0). In exams complete the square to check the minimum denominator value.

Step 2

Why this answer is correct

The correct answer is A. \(\mathbb{R}\). The denominator (x-2-4x+5=(x-2)2+1) is never (0). In exams complete the square to check the minimum denominator value.

Step 3

Exam Tip

हर (x-2-4x+5=(x-2)2+1) कभी (0) नहीं होता। परीक्षा में पूर्ण वर्ग बनाकर हर की न्यूनतम वैल्यू जांचें।

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फलन (f(x)=\sqrt{15-5x}) का डोमेन क्या है?

What is the domain of (f(x)=\sqrt{15-5x})?

Explanation opens after your attempt
Correct Answer

A. (\(-\infty,3]\)

Step 1

Concept

The square root needs \(15-5x\ge0\), giving \(x\le3\). In exams the inequality reverses when dividing by a negative coefficient.

Step 2

Why this answer is correct

The correct answer is A. (\(-\infty,3]\). The square root needs \(15-5x\ge0\), giving \(x\le3\). In exams the inequality reverses when dividing by a negative coefficient.

Step 3

Exam Tip

वर्गमूल के लिए \(15-5x\ge0\) से \(x\le3\) मिलता है। परीक्षा में ऋणात्मक गुणांक से भाग देते समय असमानता बदलती है।

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फलन (f(x)=\sqrt{(x+1)(x-5)}) का डोमेन क्या है?

What is the domain of (f(x)=\sqrt{(x+1)(x-5)})?

Explanation opens after your attempt
Correct Answer

A. (\(-\infty,-1]\cup[5,\infty\))

Step 1

Concept

The expression inside the square root must satisfy ((x+1)(x-5)\ge0). A sign table gives the correct outer intervals.

Step 2

Why this answer is correct

The correct answer is A. (\(-\infty,-1]\cup[5,\infty\)). The expression inside the square root must satisfy ((x+1)(x-5)\ge0). A sign table gives the correct outer intervals.

Step 3

Exam Tip

वर्गमूल के अंदर ((x+1)(x-5)\ge0) होना चाहिए। संकेत तालिका से बाहरी अंतराल सही मिलते हैं।

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फलन (f(x)=x-2+8x+18) की रेंज क्या है?

What is the range of (f(x)=x-2+8x+18)?

Explanation opens after your attempt
Correct Answer

A. \([2,\infty\))

Step 1

Concept

(x-2+8x+18=(x+4)2+2), so the minimum is (2). In exams completing the square is useful for the range of a quadratic.

Step 2

Why this answer is correct

The correct answer is A. \([2,\infty\)). (x-2+8x+18=(x+4)2+2), so the minimum is (2). In exams completing the square is useful for the range of a quadratic.

Step 3

Exam Tip

(x-2+8x+18=(x+4)2+2), इसलिए न्यूनतम (2) है। परीक्षा में quadratic की रेंज के लिए पूर्ण वर्ग विधि उपयोगी है।

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फलन (f(x)=7-(x-3)2) की रेंज क्या है?

What is the range of (f(x)=7-(x-3)2)?

Explanation opens after your attempt
Correct Answer

A. (\(-\infty,7]\)

Step 1

Concept

Since ((x-3)2\ge0), (7-(x-3)2\le7). In exams identify the maximum value of a downward-opening parabola.

Step 2

Why this answer is correct

The correct answer is A. (\(-\infty,7]\). Since ((x-3)2\ge0), (7-(x-3)2\le7). In exams identify the maximum value of a downward-opening parabola.

Step 3

Exam Tip

क्योंकि ((x-3)2\ge0), इसलिए (7-(x-3)2\le7)। परीक्षा में नीचे खुलने वाले परवलय की maximum value पहचानें।

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फलन (f(x)=|x+4|-5) की रेंज क्या है?

What is the range of (f(x)=|x+4|-5)?

Explanation opens after your attempt
Correct Answer

A. \([-5,\infty\))

Step 1

Concept

\(|x+4|\ge0\), so \(|x+4|-5\ge-5\). In exams the minimum of modulus occurs at its zero point.

Step 2

Why this answer is correct

The correct answer is A. \([-5,\infty\)). \(|x+4|\ge0\), so \(|x+4|-5\ge-5\). In exams the minimum of modulus occurs at its zero point.

Step 3

Exam Tip

\(|x+4|\ge0\), इसलिए \(|x+4|-5\ge-5\)। परीक्षा में मापांक का minimum उसके zero point पर मिलता है।

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फलन (f(x)=4|x-1|+2) की रेंज क्या है?

What is the range of (f(x)=4|x-1|+2)?

Explanation opens after your attempt
Correct Answer

A. \([2,\infty\))

Step 1

Concept

The minimum value of (|x-1|) is (0), so (f(x)\ge2). In exams the outside added (2) shifts the minimum upward.

Step 2

Why this answer is correct

The correct answer is A. \([2,\infty\)). The minimum value of (|x-1|) is (0), so (f(x)\ge2). In exams the outside added (2) shifts the minimum upward.

Step 3

Exam Tip

(|x-1|) की न्यूनतम वैल्यू (0) है, इसलिए (f(x)\ge2)। परीक्षा में बाहर जोड़ा गया (2) minimum को ऊपर करता है।

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फलन (f(x)=\sqrt{x+9}-4) की रेंज क्या है?

What is the range of (f(x)=\sqrt{x+9}-4)?

Explanation opens after your attempt
Correct Answer

A. \([-4,\infty\))

Step 1

Concept

\(\sqrt{x+9}\ge0\), so \(\sqrt{x+9}-4\ge-4\). In exams apply the vertical shift to the basic square-root range.

Step 2

Why this answer is correct

The correct answer is A. \([-4,\infty\)). \(\sqrt{x+9}\ge0\), so \(\sqrt{x+9}-4\ge-4\). In exams apply the vertical shift to the basic square-root range.

Step 3

Exam Tip

\(\sqrt{x+9}\ge0\), इसलिए \(\sqrt{x+9}-4\ge-4\)। परीक्षा में वर्गमूल की basic range पर vertical shift लगाएं।

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फलन (f(x)=6-\sqrt{x+2}) की रेंज क्या है?

What is the range of (f(x)=6-\sqrt{x+2})?

Explanation opens after your attempt
Correct Answer

A. (\(-\infty,6]\)

Step 1

Concept

\(\sqrt{x+2}\ge0\), so \(6-\sqrt{x+2}\le6\) and can decrease without bound. In exams a negative sign changes the direction of the range.

Step 2

Why this answer is correct

The correct answer is A. (\(-\infty,6]\). \(\sqrt{x+2}\ge0\), so \(6-\sqrt{x+2}\le6\) and can decrease without bound. In exams a negative sign changes the direction of the range.

Step 3

Exam Tip

\(\sqrt{x+2}\ge0\), इसलिए \(6-\sqrt{x+2}\le6\) और नीचे अनंत तक जा सकता है। परीक्षा में negative sign रेंज की दिशा बदलता है।

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फलन (f(x)=\frac{1}{x-2+9}) की रेंज क्या है?

What is the range of (f(x)=\frac{1}{x-2+9})?

Explanation opens after your attempt
Correct Answer

A. ( \(0,\frac{1}{9}]\)

Step 1

Concept

The denominator \(x^2+9\) has minimum value (9), so the maximum output is \(\frac{1}{9}\). (0) is only a limiting value, not an attained value.

Step 2

Why this answer is correct

The correct answer is A. ( \(0,\frac{1}{9}]\). The denominator \(x^2+9\) has minimum value (9), so the maximum output is \(\frac{1}{9}\). (0) is only a limiting value, not an attained value.

Step 3

Exam Tip

हर \(x^2+9\) की न्यूनतम वैल्यू (9) है, इसलिए अधिकतम आउटपुट \(\frac{1}{9}\) है। (0) केवल सीमा है, प्राप्त वैल्यू नहीं।

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फलन (f(x)=\frac{4}{x-2+5}-1) की रेंज क्या है?

What is the range of (f(x)=\frac{4}{x-2+5}-1)?

Explanation opens after your attempt
Correct Answer

A. (\(-1,-\frac{1}{5}]\)

Step 1

Concept

The range of \(\frac{4}{x^2+5}\) is ( \(0,\frac{4}{5}]\). Adding (-1) gives (\(-1,-\frac{1}{5}]\).

Step 2

Why this answer is correct

The correct answer is A. (\(-1,-\frac{1}{5}]\). The range of \(\frac{4}{x^2+5}\) is ( \(0,\frac{4}{5}]\). Adding (-1) gives (\(-1,-\frac{1}{5}]\).

Step 3

Exam Tip

\(\frac{4}{x^2+5}\) की रेंज ( \(0,\frac{4}{5}]\) है। इसमें (-1) जोड़ने पर (\(-1,-\frac{1}{5}]\) मिलता है।

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यदि (f(x)=x-2+2x-8) है, तो (f(x)) की न्यूनतम वैल्यू क्या है?

If (f(x)=x-2+2x-8), what is the minimum value of (f(x))?

Explanation opens after your attempt
Correct Answer

A. (-9)

Step 1

Concept

(x-2+2x-8=(x+1)2-9), so the minimum is (-9). In exams convert the quadratic into a perfect square.

Step 2

Why this answer is correct

The correct answer is A. (-9). (x-2+2x-8=(x+1)2-9), so the minimum is (-9). In exams convert the quadratic into a perfect square.

Step 3

Exam Tip

(x-2+2x-8=(x+1)2-9), इसलिए न्यूनतम (-9) है। परीक्षा में quadratic को पूर्ण वर्ग में बदलें।

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यदि (f(x)=10-(x+2)2) है, तो (f(x)) की अधिकतम वैल्यू क्या है?

If (f(x)=10-(x+2)2), what is the maximum value of (f(x))?

Explanation opens after your attempt
Correct Answer

A. (10)

Step 1

Concept

((x+2)2\ge0), so (10-(x+2)2\le10). In exams the maximum occurs when the squared term is (0).

Step 2

Why this answer is correct

The correct answer is A. (10). ((x+2)2\ge0), so (10-(x+2)2\le10). In exams the maximum occurs when the squared term is (0).

Step 3

Exam Tip

((x+2)2\ge0), इसलिए (10-(x+2)2\le10)। परीक्षा में maximum तब आता है जब squared term (0) हो।

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यदि (f(x)=x-2) और डोमेन ([-4,1]) है, तो रेंज क्या होगी?

If (f(x)=x-2) and the domain is ([-4,1]), what is the range?

Explanation opens after your attempt
Correct Answer

A. ([0,16])

Step 1

Concept

The interval ([-4,1]) contains (0), so the minimum is (0) and the maximum is (16). In exams check the vertex along with endpoints.

Step 2

Why this answer is correct

The correct answer is A. ([0,16]). The interval ([-4,1]) contains (0), so the minimum is (0) and the maximum is (16). In exams check the vertex along with endpoints.

Step 3

Exam Tip

अंतराल ([-4,1]) में (0) शामिल है, इसलिए न्यूनतम (0) और अधिकतम (16) है। परीक्षा में endpoints के साथ vertex भी जांचें।

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यदि (f(x)=x-2) और डोमेन ([-6,-2]) है, तो रेंज क्या होगी?

If (f(x)=x-2) and the domain is ([-6,-2]), what is the range?

Explanation opens after your attempt
Correct Answer

A. ([4,36])

Step 1

Concept

On the negative interval, \(x^2\) values go from (36) to (4). Therefore the range is ([4,36]).

Step 2

Why this answer is correct

The correct answer is A. ([4,36]). On the negative interval, \(x^2\) values go from (36) to (4). Therefore the range is ([4,36]).

Step 3

Exam Tip

ऋणात्मक अंतराल पर \(x^2\) की वैल्यू (36) से (4) तक आती है। इसलिए रेंज ([4,36]) है।

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यदि (f(x)=3x-2) और डोमेन ((-1,5]) है, तो रेंज क्या होगी?

If (f(x)=3x-2) and the domain is ((-1,5]), what is the range?

Explanation opens after your attempt
Correct Answer

A. ((-5,13])

Step 1

Concept

(3x-2) is an increasing linear function. The open endpoint (-1) gives open (-5) and (5) gives included (13).

Step 2

Why this answer is correct

The correct answer is A. ((-5,13]). (3x-2) is an increasing linear function. The open endpoint (-1) gives open (-5) and (5) gives included (13).

Step 3

Exam Tip

(3x-2) बढ़ता हुआ रेखीय फलन है। खुले endpoint (-1) से (-5) खुलेगा और (5) से (13) शामिल होगा।

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यदि (f(x)=4-2x) और डोमेन ([1,6)) है, तो रेंज क्या होगी?

If (f(x)=4-2x) and the domain is ([1,6)), what is the range?

Explanation opens after your attempt
Correct Answer

A. ((-8,2])

Step 1

Concept

The function is decreasing, so at (x=1) it gives (2) and as \(x\to6\) it approaches (-8), not included. In exams reverse endpoint order for a decreasing function.

Step 2

Why this answer is correct

The correct answer is A. ((-8,2]). The function is decreasing, so at (x=1) it gives (2) and as \(x\to6\) it approaches (-8), not included. In exams reverse endpoint order for a decreasing function.

Step 3

Exam Tip

फलन घटता है, इसलिए (x=1) पर (2) और \(x\to6\) पर (-8) मिलता है पर शामिल नहीं होता। परीक्षा में decreasing function में endpoints का क्रम बदलें।

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यदि (f(x)=|x|) और डोमेन ([-3,7]) है, तो रेंज क्या होगी?

If (f(x)=|x|) and the domain is ([-3,7]), what is the range?

Explanation opens after your attempt
Correct Answer

A. ([0,7])

Step 1

Concept

The domain contains (0), so the minimum is (0) and the largest modulus is (7). In exams check whether the interval contains (0).

Step 2

Why this answer is correct

The correct answer is A. ([0,7]). The domain contains (0), so the minimum is (0) and the largest modulus is (7). In exams check whether the interval contains (0).

Step 3

Exam Tip

डोमेन में (0) शामिल है, इसलिए minimum (0) है और सबसे बड़ा मापांक (7) है। परीक्षा में interval में (0) है या नहीं देखें।

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यदि (f(x)=|x+2|) और डोमेन ([1,5]) है, तो रेंज क्या होगी?

If (f(x)=|x+2|) and the domain is ([1,5]), what is the range?

Explanation opens after your attempt
Correct Answer

A. ([3,7])

Step 1

Concept

On this domain, (x+2) is positive, so (|x+2|=x+2). Endpoint values give the range ([3,7]).

Step 2

Why this answer is correct

The correct answer is A. ([3,7]). On this domain, (x+2) is positive, so (|x+2|=x+2). Endpoint values give the range ([3,7]).

Step 3

Exam Tip

इस डोमेन पर (x+2) धनात्मक है, इसलिए (|x+2|=x+2)। endpoints से रेंज ([3,7]) मिलती है।

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यदि (f(x)=\sqrt{x-1}) और डोमेन ([1,10]) है, तो रेंज क्या होगी?

If (f(x)=\sqrt{x-1}) and the domain is ([1,10]), what is the range?

Explanation opens after your attempt
Correct Answer

A. ([0,3])

Step 1

Concept

\(\sqrt{x-1}\) is increasing, so endpoint values are (0) and (3). In exams include endpoints of a closed interval.

Step 2

Why this answer is correct

The correct answer is A. ([0,3]). \(\sqrt{x-1}\) is increasing, so endpoint values are (0) and (3). In exams include endpoints of a closed interval.

Step 3

Exam Tip

\(\sqrt{x-1}\) बढ़ता है, इसलिए endpoints पर वैल्यू (0) और (3) हैं। परीक्षा में बंद अंतराल के endpoints शामिल करें।

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यदि (f(x)=\frac{1}{x+1}) और डोमेन ([1,3]) है, तो रेंज क्या होगी?

If (f(x)=\frac{1}{x+1}) and the domain is ([1,3]), what is the range?

Explanation opens after your attempt
Correct Answer

A. \([\frac{1}{4},\frac{1}{2}]\)

Step 1

Concept

On the positive interval, \(\frac{1}{x+1}\) decreases. At (x=1) and (x=3), values are \(\frac{1}{2}\) and \(\frac{1}{4}\).

Step 2

Why this answer is correct

The correct answer is A. \([\frac{1}{4},\frac{1}{2}]\). On the positive interval, \(\frac{1}{x+1}\) decreases. At (x=1) and (x=3), values are \(\frac{1}{2}\) and \(\frac{1}{4}\).

Step 3

Exam Tip

धनात्मक अंतराल पर \(\frac{1}{x+1}\) घटता है। (x=1) और (x=3) से \(\frac{1}{2}\) और \(\frac{1}{4}\) मिलते हैं।

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यदि (f(x)=\frac{1}{x+6}) है, तो (f(x)) की रेंज क्या है?

If (f(x)=\frac{1}{x+6}), what is the range of (f(x))?

Explanation opens after your attempt
Correct Answer

A. \(\mathbb{R}\setminus{0}\)

Step 1

Concept

\(\frac{1}{x+6}\) can never be (0). In exams a horizontal shift does not change the excluded range value of a reciprocal.

Step 2

Why this answer is correct

The correct answer is A. \(\mathbb{R}\setminus{0}\). \(\frac{1}{x+6}\) can never be (0). In exams a horizontal shift does not change the excluded range value of a reciprocal.

Step 3

Exam Tip

\(\frac{1}{x+6}\) कभी (0) नहीं हो सकता। परीक्षा में horizontal shift से reciprocal की excluded range value नहीं बदलती।

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यदि (f(x)=\frac{5}{x-2}+1) है, तो (f(x)) की रेंज क्या है?

If (f(x)=\frac{5}{x-2}+1), what is the range of (f(x))?

Explanation opens after your attempt
Correct Answer

A. \(\mathbb{R}\setminus{1}\)

Step 1

Concept

\(\frac{5}{x-2}\) is never (0), so output (1) is not obtained. In exams a vertical shift changes the excluded value.

Step 2

Why this answer is correct

The correct answer is A. \(\mathbb{R}\setminus{1}\). \(\frac{5}{x-2}\) is never (0), so output (1) is not obtained. In exams a vertical shift changes the excluded value.

Step 3

Exam Tip

\(\frac{5}{x-2}\) कभी (0) नहीं होता, इसलिए (1) आउटपुट नहीं मिलता। परीक्षा में vertical shift से excluded value बदलती है।

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फलन (f(x)=\sqrt{9-(x+1)2}) की रेंज क्या है?

What is the range of (f(x)=\sqrt{9-(x+1)2})?

Explanation opens after your attempt
Correct Answer

A. ([0,3])

Step 1

Concept

On the domain, the inside value can vary from (0) to (9). Hence the square-root range is ([0,3]).

Step 2

Why this answer is correct

The correct answer is A. ([0,3]). On the domain, the inside value can vary from (0) to (9). Hence the square-root range is ([0,3]).

Step 3

Exam Tip

डोमेन पर अंदर की वैल्यू (0) से (9) तक हो सकती है। इसलिए वर्गमूल की रेंज ([0,3]) है।

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फलन (f(x)=\sqrt{36-(x-2)2}) की रेंज क्या है?

What is the range of (f(x)=\sqrt{36-(x-2)2})?

Explanation opens after your attempt
Correct Answer

A. ([0,6])

Step 1

Concept

The maximum inside value is (36) and the minimum can be (0). Therefore the range of (f(x)) is ([0,6]).

Step 2

Why this answer is correct

The correct answer is A. ([0,6]). The maximum inside value is (36) and the minimum can be (0). Therefore the range of (f(x)) is ([0,6]).

Step 3

Exam Tip

अंदर की अधिकतम वैल्यू (36) है और न्यूनतम (0) हो सकती है। इसलिए (f(x)) की रेंज ([0,6]) है।

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फलन (f(x)=\sqrt{x-2-2x+10}) की रेंज क्या है?

What is the range of (f(x)=\sqrt{x-2-2x+10})?

Explanation opens after your attempt
Correct Answer

A. \([3,\infty\))

Step 1

Concept

Inside, (x-2-2x+10=(x-1)2+9), so the minimum is (9). Taking square root gives the range \([3,\infty\)).

Step 2

Why this answer is correct

The correct answer is A. \([3,\infty\)). Inside, (x-2-2x+10=(x-1)2+9), so the minimum is (9). Taking square root gives the range \([3,\infty\)).

Step 3

Exam Tip

अंदर (x-2-2x+10=(x-1)2+9) है, इसलिए न्यूनतम (9) है। वर्गमूल लेने पर रेंज \([3,\infty\)) होगी।

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फलन (f(x)=\frac{x-2}{x-2+4}) की रेंज क्या है?

What is the range of (f(x)=\frac{x-2}{x-2+4})?

Explanation opens after your attempt
Correct Answer

A. ([0,1))

Step 1

Concept

(f(x)=1-\frac{4}{x-2+4}), so (0) is attained but (1) is not. In exams writing such rational expressions in (1-) form is useful.

Step 2

Why this answer is correct

The correct answer is A. ([0,1)). (f(x)=1-\frac{4}{x-2+4}), so (0) is attained but (1) is not. In exams writing such rational expressions in (1-) form is useful.

Step 3

Exam Tip

(f(x)=1-\frac{4}{x-2+4}), इसलिए (0) मिलता है पर (1) नहीं मिलता। परीक्षा में ऐसे rational expressions को (1-) रूप में लिखना उपयोगी है।

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फलन (f(x)=\frac{x-2+2}{x-2+5}) की रेंज क्या है?

What is the range of (f(x)=\frac{x-2+2}{x-2+5})?

Explanation opens after your attempt
Correct Answer

A. \([\frac{2}{5},1\))

Step 1

Concept

\(\frac{x^2+2}{x^2+5}=1-\frac{3}{x^2+5}\). At (x=0), the minimum \(\frac{2}{5}\) is attained and (1) is not attained.

Step 2

Why this answer is correct

The correct answer is A. \([\frac{2}{5},1\)). \(\frac{x^2+2}{x^2+5}=1-\frac{3}{x^2+5}\). At (x=0), the minimum \(\frac{2}{5}\) is attained and (1) is not attained.

Step 3

Exam Tip

\(\frac{x^2+2}{x^2+5}=1-\frac{3}{x^2+5}\) है। (x=0) पर न्यूनतम \(\frac{2}{5}\) मिलता है और (1) नहीं मिलता।

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फलन (f(x)=\frac{1}{|x-3|+1}) की रेंज क्या है?

What is the range of (f(x)=\frac{1}{|x-3|+1})?

Explanation opens after your attempt
Correct Answer

A. ( (0,1])

Step 1

Concept

The denominator (|x-3|+1) has minimum value (1) and can grow without bound. Hence the output is greater than (0) and up to (1).

Step 2

Why this answer is correct

The correct answer is A. ( (0,1]). The denominator (|x-3|+1) has minimum value (1) and can grow without bound. Hence the output is greater than (0) and up to (1).

Step 3

Exam Tip

हर (|x-3|+1) की न्यूनतम वैल्यू (1) है और यह अनंत तक जा सकता है। इसलिए output (0) से बड़ा और (1) तक है।

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कौन सा फलन हर वास्तविक (x) पर परिभाषित है?

Which function is defined for every real (x)?

Explanation opens after your attempt
Correct Answer

C. (f(x)=x-2+8)

Step 1

Concept

The polynomial \(x^2+8\) is defined for every real (x). In exams polynomial functions usually have domain \(\mathbb{R}\).

Step 2

Why this answer is correct

The correct answer is C. (f(x)=x-2+8). The polynomial \(x^2+8\) is defined for every real (x). In exams polynomial functions usually have domain \(\mathbb{R}\).

Step 3

Exam Tip

बहुपद \(x^2+8\) हर वास्तविक (x) के लिए परिभाषित है। परीक्षा में polynomial functions का डोमेन सामान्यतः \(\mathbb{R}\) होता है।

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कौन सा फलन रेंज \(\mathbb{R}\setminus{-3}\) रखता है?

Which function has range \(\mathbb{R}\setminus{-3}\)?

Explanation opens after your attempt
Correct Answer

A. (f(x)=\frac{2}{x}+(-3))

Step 1

Concept

\(\frac{2}{x}\) is never (0), so output (-3) cannot occur. In exams identify the vertical shift of a reciprocal function.

Step 2

Why this answer is correct

The correct answer is A. (f(x)=\frac{2}{x}+(-3)). \(\frac{2}{x}\) is never (0), so output (-3) cannot occur. In exams identify the vertical shift of a reciprocal function.

Step 3

Exam Tip

\(\frac{2}{x}\) कभी (0) नहीं होता, इसलिए (-3) output नहीं मिल सकता। परीक्षा में reciprocal function की vertical shift पहचानें।

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कौन सा कथन फलन (f(x)=\sqrt{x-2+16}) के लिए सही है?

Which statement is correct for (f(x)=\sqrt{x-2+16})?

Explanation opens after your attempt
Correct Answer

A. डोमेन \(\mathbb{R}\) और रेंज \([4,\infty\))Domain \(\mathbb{R}\) and range \([4,\infty\))

Step 1

Concept

Since \(x^2+16\ge16\), the square root is at least (4). The inside expression is defined for every real (x).

Step 2

Why this answer is correct

The correct answer is A. डोमेन \(\mathbb{R}\) और रेंज \([4,\infty\)) / Domain \(\mathbb{R}\) and range \([4,\infty\)). Since \(x^2+16\ge16\), the square root is at least (4). The inside expression is defined for every real (x).

Step 3

Exam Tip

क्योंकि \(x^2+16\ge16\), इसलिए वर्गमूल कम से कम (4) है। अंदर की राशि हर वास्तविक (x) के लिए परिभाषित है।

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कौन सा कथन (f(x)=\frac{1}{x-2-4}) के लिए सही है?

Which statement is correct for (f(x)=\frac{1}{x-2-4})?

Explanation opens after your attempt
Correct Answer

A. डोमेन \(\mathbb{R}\setminus{-2,2}\) हैDomain is \(\mathbb{R}\setminus{-2,2}\)

Step 1

Concept

The denominator \(x^2-4\) becomes (0) when (x=-2) or (x=2). In exams remove zero values of the denominator.

Step 2

Why this answer is correct

The correct answer is A. डोमेन \(\mathbb{R}\setminus{-2,2}\) है / Domain is \(\mathbb{R}\setminus{-2,2}\). The denominator \(x^2-4\) becomes (0) when (x=-2) or (x=2). In exams remove zero values of the denominator.

Step 3

Exam Tip

हर \(x^2-4\) तब (0) होगा जब (x=-2) या (x=2)। परीक्षा में denominator की zero values हटाएं।

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यदि (f(x)=\sqrt{x-3}) है, तो (f(x)=5) के लिए (x) क्या होगा?

If (f(x)=\sqrt{x-3}), what is (x) when (f(x)=5)?

Explanation opens after your attempt
Correct Answer

A. (28)

Step 1

Concept

\(\sqrt{x-3}=5\) gives (x-3=25), so (x=28). In exams check the answer in the original equation after squaring.

Step 2

Why this answer is correct

The correct answer is A. (28). \(\sqrt{x-3}=5\) gives (x-3=25), so (x=28). In exams check the answer in the original equation after squaring.

Step 3

Exam Tip

\(\sqrt{x-3}=5\) से (x-3=25), इसलिए (x=28)। परीक्षा में वर्ग करने के बाद original equation में जांच लें।

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यदि (f(x)=|x+6|) है, तो (f(x)=9) के लिए (x) की वैल्यू क्या हो सकती है?

If (f(x)=|x+6|), what values can (x) have when (f(x)=9)?

Explanation opens after your attempt
Correct Answer

A. (x=3) या (x=-15)(x=3) or (x=-15)

Step 1

Concept

(|x+6|=9) gives (x+6=9) or (x+6=-9). In exams take both branches of a modulus equation.

Step 2

Why this answer is correct

The correct answer is A. (x=3) या (x=-15) / (x=3) or (x=-15). (|x+6|=9) gives (x+6=9) or (x+6=-9). In exams take both branches of a modulus equation.

Step 3

Exam Tip

(|x+6|=9) से (x+6=9) या (x+6=-9) मिलता है। परीक्षा में modulus equation की दोनों शाखाएं लें।

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यदि (f(x)=x-2+3x-2) है, तो (f(-2)) क्या है?

If (f(x)=x-2+3x-2), what is (f(-2))?

Explanation opens after your attempt
Correct Answer

A. (-4)

Step 1

Concept

(f(-2)=(-2)2+3(-2)-2=-4). In exams use brackets while substituting a negative input.

Step 2

Why this answer is correct

The correct answer is A. (-4). (f(-2)=(-2)2+3(-2)-2=-4). In exams use brackets while substituting a negative input.

Step 3

Exam Tip

(f(-2)=(-2)2+3(-2)-2=-4) है। परीक्षा में ऋणात्मक input डालते समय brackets लगाएं।

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यदि (f(x)=\frac{x-3}{x+2}) है, तो (f(1)) क्या है?

If (f(x)=\frac{x-3}{x+2}), what is (f(1))?

Explanation opens after your attempt
Correct Answer

A. \(-\frac{2}{3}\)

Step 1

Concept

(f(1)=\frac{1-3}{1+2}=-\frac{2}{3}). In exams handle the numerator and denominator separately with care.

Step 2

Why this answer is correct

The correct answer is A. \(-\frac{2}{3}\). (f(1)=\frac{1-3}{1+2}=-\frac{2}{3}). In exams handle the numerator and denominator separately with care.

Step 3

Exam Tip

(f(1)=\frac{1-3}{1+2}=-\frac{2}{3}) है। परीक्षा में numerator और denominator अलग-अलग सावधानी से रखें।

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यदि (f(x)=\sqrt{x-2-16}) है, तो (f(-5)) क्या है?

If (f(x)=\sqrt{x-2-16}), what is (f(-5))?

Explanation opens after your attempt
Correct Answer

A. (3)

Step 1

Concept

(f(-5)=\sqrt{25-16}=\sqrt{9}=3). In exams the principal value of square root is non-negative.

Step 2

Why this answer is correct

The correct answer is A. (3). (f(-5)=\sqrt{25-16}=\sqrt{9}=3). In exams the principal value of square root is non-negative.

Step 3

Exam Tip

(f(-5)=\sqrt{25-16}=\sqrt{9}=3) है। परीक्षा में वर्गमूल की principal value non-negative होती है।

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यदि (f(x)=x-2-12) और वास्तविक डोमेन \(\mathbb{R}\) है, तो रेंज क्या है?

If (f(x)=x-2-12) and the real domain is \(\mathbb{R}\), what is the range?

Explanation opens after your attempt
Correct Answer

A. \([-12,\infty\))

Step 1

Concept

Since \(x^2\ge0\), \(x^2-12\ge-12\). In exams remember the minimum value of the square function is (0).

Step 2

Why this answer is correct

The correct answer is A. \([-12,\infty\)). Since \(x^2\ge0\), \(x^2-12\ge-12\). In exams remember the minimum value of the square function is (0).

Step 3

Exam Tip

क्योंकि \(x^2\ge0\), इसलिए \(x^2-12\ge-12\)। परीक्षा में square function की minimum value (0) याद रखें।

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यदि \(f:\mathbb{R}\to\mathbb{R}\) और (f(x)=x-2+7) है, तो कौन सा कथन सही है?

If \(f:\mathbb{R}\to\mathbb{R}\) and (f(x)=x-2+7), which statement is correct?

Explanation opens after your attempt
Correct Answer

A. रेंज \([7,\infty\)) है और codomain \(\mathbb{R}\) हैRange is \([7,\infty\)) and codomain is \(\mathbb{R}\)

Step 1

Concept

In the given notation, the second set is the codomain \(\mathbb{R}\), while actual outputs are \([7,\infty\)). In exams keep range and codomain separate.

Step 2

Why this answer is correct

The correct answer is A. रेंज \([7,\infty\)) है और codomain \(\mathbb{R}\) है / Range is \([7,\infty\)) and codomain is \(\mathbb{R}\). In the given notation, the second set is the codomain \(\mathbb{R}\), while actual outputs are \([7,\infty\)). In exams keep range and codomain separate.

Step 3

Exam Tip

दिए गए notation में दूसरा समुच्चय codomain \(\mathbb{R}\) है, जबकि वास्तविक outputs \([7,\infty\)) हैं। परीक्षा में range और codomain अलग रखें।

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यदि \(A=\{-3,-1,2\}\), \(f:A\to\mathbb{R}\), और (f(x)=x-2-1) है, तो रेंज क्या है?

If \(A=\{-3,-1,2\}\), \(f:A\to\mathbb{R}\), and (f(x)=x-2-1), what is the range?

Explanation opens after your attempt
Correct Answer

A. ({0,3,8})

Step 1

Concept

(f(-3)=8), (f(-1)=0), and (f(2)=3). In exams write a repeated output only once in a set.

Step 2

Why this answer is correct

The correct answer is A. ({0,3,8}). (f(-3)=8), (f(-1)=0), and (f(2)=3). In exams write a repeated output only once in a set.

Step 3

Exam Tip

(f(-3)=8), (f(-1)=0), और (f(2)=3) हैं। परीक्षा में set में repeated output हो तो एक बार ही लिखें।

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यदि \(A=\{2,5,10,17\}\) और \(f:A\to\mathbb{R}\), (f(x)=\sqrt{x-1}) है, तो रेंज क्या है?

If \(A=\{2,5,10,17\}\) and \(f:A\to\mathbb{R}\), (f(x)=\sqrt{x-1}), what is the range?

Explanation opens after your attempt
Correct Answer

A. ({1,2,3,4})

Step 1

Concept

For the given inputs, (f(2)=1), (f(5)=2), (f(10)=3), and (f(17)=4). In exams use only the given inputs in a finite domain.

Step 2

Why this answer is correct

The correct answer is A. ({1,2,3,4}). For the given inputs, (f(2)=1), (f(5)=2), (f(10)=3), and (f(17)=4). In exams use only the given inputs in a finite domain.

Step 3

Exam Tip

दिए गए inputs पर (f(2)=1), (f(5)=2), (f(10)=3), और (f(17)=4) हैं। परीक्षा में finite domain में केवल दिए गए inputs लें।

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फलन (f(x)=\sqrt{\frac{x+3}{x-1}}) का डोमेन क्या है?

What is the domain of (f(x)=\sqrt{\frac{x+3}{x-1}})?

Explanation opens after your attempt
Correct Answer

A. ((-\infty,-3]\cup\(1,\infty\))

Step 1

Concept

The expression inside the square root must satisfy \(\frac{x+3}{x-1}\ge0\) and \(x\ne1\). A sign table gives ((-\infty,-3]\cup\(1,\infty\)).

Step 2

Why this answer is correct

The correct answer is A. ((-\infty,-3]\cup\(1,\infty\)). The expression inside the square root must satisfy \(\frac{x+3}{x-1}\ge0\) and \(x\ne1\). A sign table gives ((-\infty,-3]\cup\(1,\infty\)).

Step 3

Exam Tip

वर्गमूल के अंदर \(\frac{x+3}{x-1}\ge0\) और \(x\ne1\) चाहिए। संकेत तालिका से ((-\infty,-3]\cup\(1,\infty\)) मिलता है।

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