यदि (f(x)=x-2-1) और (g(x)=2x+1) हैं, तो ((fg)(2)) ज्ञात करें।

If (f(x)=x-2-1) and (g(x)=2x+1), find ((fg)(2)).

Explanation opens after your attempt
Correct Answer

A. (15)

Step 1

Concept

((fg)(2)=f(2)g(2)=(4-1)(5)=15). In a product, finding both values separately is often easier.

Step 2

Why this answer is correct

The correct answer is A. (15). ((fg)(2)=f(2)g(2)=(4-1)(5)=15). In a product, finding both values separately is often easier.

Step 3

Exam Tip

((fg)(2)=f(2)g(2)=(4-1)(5)=15)। उत्पाद में दोनों फलनों का मान अलग-अलग निकालना आसान है।

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Mathematics Answer, Explanation and Revision Hints

यदि (f(x)=x-2-1) और (g(x)=2x+1) हैं, तो ((fg)(2)) ज्ञात करें। / If (f(x)=x-2-1) and (g(x)=2x+1), find ((fg)(2)).

Correct Answer: A. (15). Explanation: ((fg)(2)=f(2)g(2)=(4-1)(5)=15)। उत्पाद में दोनों फलनों का मान अलग-अलग निकालना आसान है। / ((fg)(2)=f(2)g(2)=(4-1)(5)=15). In a product, finding both values separately is often easier.

Which concept should I revise for this Mathematics MCQ?

((fg)(2)=f(2)g(2)=(4-1)(5)=15). In a product, finding both values separately is often easier.

What exam hint can help solve this Mathematics question?

((fg)(2)=f(2)g(2)=(4-1)(5)=15)। उत्पाद में दोनों फलनों का मान अलग-अलग निकालना आसान है।