यदि (f(x)=x-2+kx+1) और (g(x)=x-2-kx+1) हैं, तथा (f-g=6x), तो (k) क्या होगा?

If (f(x)=x-2+kx+1) and (g(x)=x-2-kx+1), and (f-g=6x), what is (k)?

Explanation opens after your attempt
Correct Answer

A. (3)

Step 1

Concept

(f-g=2kx), so (2k=6) and (k=3). Comparing coefficients is the fastest method in parameter questions.

Step 2

Why this answer is correct

The correct answer is A. (3). (f-g=2kx), so (2k=6) and (k=3). Comparing coefficients is the fastest method in parameter questions.

Step 3

Exam Tip

(f-g=2kx), अतः (2k=6) और (k=3)। गुणांक मिलाना पैरामीटर प्रश्नों में तेज तरीका है।

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Mathematics Answer, Explanation and Revision Hints

यदि (f(x)=x-2+kx+1) और (g(x)=x-2-kx+1) हैं, तथा (f-g=6x), तो (k) क्या होगा? / If (f(x)=x-2+kx+1) and (g(x)=x-2-kx+1), and (f-g=6x), what is (k)?

Correct Answer: A. (3). Explanation: (f-g=2kx), अतः (2k=6) और (k=3)। गुणांक मिलाना पैरामीटर प्रश्नों में तेज तरीका है। / (f-g=2kx), so (2k=6) and (k=3). Comparing coefficients is the fastest method in parameter questions.

Which concept should I revise for this Mathematics MCQ?

(f-g=2kx), so (2k=6) and (k=3). Comparing coefficients is the fastest method in parameter questions.

What exam hint can help solve this Mathematics question?

(f-g=2kx), अतः (2k=6) और (k=3)। गुणांक मिलाना पैरामीटर प्रश्नों में तेज तरीका है।