Concept-wise Practice

linear-fraction MCQ Questions for Class 12

linear-fraction se related questions ko ek jagah revise karein. Har question me bilingual content, answer feedback aur explanation available hai.

Practice Questions

3 questions tagged with linear-fraction.

Question 1/3 Medium Mathematics Relations and Functions One-one function Class 12 Level 24

यदि \(f:\mathbb{R}\to\mathbb{R}\) और (f(x)=\frac{x+1}{2}) है, तो (f) के लिए सही निष्कर्ष चुनिए।

If \(f:\mathbb{R}\to\mathbb{R}\) and (f(x)=\frac{x+1}{2}), choose the correct conclusion for (f).

Explanation opens after your attempt
Correct Answer

A. एकैकी हैOne-one

Step 1

Concept

Assume (f(a)=f(b)).

Step 2

Why this answer is correct

From \(\frac{a+1}{2}=\frac{b+1}{2}\), we get (a+1=b+1), so (a=b).

Step 3

Exam Tip

Even in fractional form, a linear function with non-zero coefficient is one-one. चरण 1: मान लें (f(a)=f(b))। चरण 2: \(\frac{a+1}{2}=\frac{b+1}{2}\) से (a+1=b+1), इसलिए (a=b)। चरण 3: भिन्न रूप में भी गैर-शून्य गुणांक वाला रैखिक फलन एकैकी होता है।

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Question 2/3 Medium Mathematics Relations and Functions One-one function Class 12 Level 23

यदि \(f:\mathbb{R}\to\mathbb{R}\), (f(x)=\frac{3x-2}{5}), तो (f) के बारे में सही उत्तर क्या है?

If \(f:\mathbb{R}\to\mathbb{R}\), (f(x)=\frac{3x-2}{5}), what is the correct answer about (f)?

Explanation opens after your attempt
Correct Answer

A. एकैकी हैIt is one-one

Step 1

Concept

Write (f(a)=f(b)).

Step 2

Why this answer is correct

From \(\frac{3a-2}{5}=\frac{3b-2}{5}\), we get (3a-2=3b-2), so (a=b).

Step 3

Exam Tip

A linear function written as a fraction is also one-one if the coefficient of (x) is non-zero. चरण 1: (f(a)=f(b)) लिखें। चरण 2: \(\frac{3a-2}{5}=\frac{3b-2}{5}\) से (3a-2=3b-2) और (a=b)। चरण 3: भिन्न में लिखा रैखिक फलन भी एकैकी होता है यदि (x) का गुणांक शून्य नहीं हो।

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Question 3/3 Easy Mathematics Relations and Functions One-one function Class 12 Level 22

यदि (f(x)=\frac{x+1}{2}) हो तो (f) एकैकी है या नहीं?

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

Explanation opens after your attempt
Correct Answer

A. हाँYes

Step 1

Concept

Assume (f(a)=f(b)).

Step 2

Why this answer is correct

\(\frac{a+1}{2}=\frac{b+1}{2}\) gives (a+1=b+1), so (a=b).

Step 3

Exam Tip

A fixed denominator does not break one-one property. चरण 1: (f(a)=f(b)) मानें। चरण 2: \(\frac{a+1}{2}=\frac{b+1}{2}\) से (a+1=b+1) और (a=b) मिलता है। चरण 3: हर में स्थिर संख्या होने से एकैकीपन नहीं टूटता।

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