यदि (f(x)=x-2+4) और (g(x)=4x) हैं, तो ((f-g)(x)\ge 0) किसके लिए सत्य है?

If (f(x)=x-2+4) and (g(x)=4x), for which (x) is ((f-g)(x)\ge 0) true?

Explanation opens after your attempt
Correct Answer

A. सभी \(x\in\mathbb{R}\)all \(x\in\mathbb{R}\)

Step 1

Concept

((f-g)(x)=x-2-4x+4=(x-2)2), which is always non-negative. A perfect square is never negative.

Step 2

Why this answer is correct

The correct answer is A. सभी \(x\in\mathbb{R}\) / all \(x\in\mathbb{R}\). ((f-g)(x)=x-2-4x+4=(x-2)2), which is always non-negative. A perfect square is never negative.

Step 3

Exam Tip

((f-g)(x)=x-2-4x+4=(x-2)2), जो हमेशा अऋण है। पूर्ण वर्ग कभी ऋणात्मक नहीं होता।

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Mathematics Answer, Explanation and Revision Hints

यदि (f(x)=x-2+4) और (g(x)=4x) हैं, तो ((f-g)(x)\ge 0) किसके लिए सत्य है? / If (f(x)=x-2+4) and (g(x)=4x), for which (x) is ((f-g)(x)\ge 0) true?

Correct Answer: A. सभी \(x\in\mathbb{R}\) / all \(x\in\mathbb{R}\). Explanation: ((f-g)(x)=x-2-4x+4=(x-2)2), जो हमेशा अऋण है। पूर्ण वर्ग कभी ऋणात्मक नहीं होता। / ((f-g)(x)=x-2-4x+4=(x-2)2), which is always non-negative. A perfect square is never negative.

Which concept should I revise for this Mathematics MCQ?

((f-g)(x)=x-2-4x+4=(x-2)2), which is always non-negative. A perfect square is never negative.

What exam hint can help solve this Mathematics question?

((f-g)(x)=x-2-4x+4=(x-2)2), जो हमेशा अऋण है। पूर्ण वर्ग कभी ऋणात्मक नहीं होता।