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

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

Explanation opens after your attempt
Correct Answer

A. ((2,3])

Step 1

Concept

Let \(t=x^2\ge 0\), then \(f=\frac{2t+3}{t+1}\) is decreasing. At (t=0), (3) is obtained and (2) is not attained.

Step 2

Why this answer is correct

The correct answer is A. ((2,3]). Let \(t=x^2\ge 0\), then \(f=\frac{2t+3}{t+1}\) is decreasing. At (t=0), (3) is obtained and (2) is not attained.

Step 3

Exam Tip

मान लें \(t=x^2\ge 0\), तब \(f=\frac{2t+3}{t+1}\) घटता है। (t=0) पर (3) मिलता है और (2) प्राप्त नहीं होता।

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Mathematics Answer, Explanation and Revision Hints

यदि (f(x)=\frac{2x-2+3}{x-2+1}), तो (f) का परिसर क्या है? / If (f(x)=\frac{2x-2+3}{x-2+1}), what is the range of (f)?

Correct Answer: A. ((2,3]). Explanation: मान लें \(t=x^2\ge 0\), तब \(f=\frac{2t+3}{t+1}\) घटता है। (t=0) पर (3) मिलता है और (2) प्राप्त नहीं होता। / Let \(t=x^2\ge 0\), then \(f=\frac{2t+3}{t+1}\) is decreasing. At (t=0), (3) is obtained and (2) is not attained.

Which concept should I revise for this Mathematics MCQ?

Let \(t=x^2\ge 0\), then \(f=\frac{2t+3}{t+1}\) is decreasing. At (t=0), (3) is obtained and (2) is not attained.

What exam hint can help solve this Mathematics question?

मान लें \(t=x^2\ge 0\), तब \(f=\frac{2t+3}{t+1}\) घटता है। (t=0) पर (3) मिलता है और (2) प्राप्त नहीं होता।