यदि (f(x)=\frac{1}{x-2-4}) और (g(x)=x+2) हों, तो ((fg)(x)) का डोमेन क्या है?

If (f(x)=\frac{1}{x-2-4}) and (g(x)=x+2), what is the domain of ((fg)(x))?

Explanation opens after your attempt
Correct Answer

A. \(\mathbb{R}-{-2,2}\)

Step 1

Concept

(x-2-4=(x-2)(x+2)), so \(x\ne 2,-2\). Even if cancellation appears after multiplication, do not forget the original domain.

Step 2

Why this answer is correct

The correct answer is A. \(\mathbb{R}-{-2,2}\). (x-2-4=(x-2)(x+2)), so \(x\ne 2,-2\). Even if cancellation appears after multiplication, do not forget the original domain.

Step 3

Exam Tip

(x-2-4=(x-2)(x+2)), इसलिए \(x\ne 2,-2\)। गुणा के बाद कटाव दिखे तो भी मूल डोमेन न भूलें।

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Mathematics Answer, Explanation and Revision Hints

यदि (f(x)=\frac{1}{x-2-4}) और (g(x)=x+2) हों, तो ((fg)(x)) का डोमेन क्या है? / If (f(x)=\frac{1}{x-2-4}) and (g(x)=x+2), what is the domain of ((fg)(x))?

Correct Answer: A. \(\mathbb{R}-{-2,2}\). Explanation: (x-2-4=(x-2)(x+2)), इसलिए \(x\ne 2,-2\)। गुणा के बाद कटाव दिखे तो भी मूल डोमेन न भूलें। / (x-2-4=(x-2)(x+2)), so \(x\ne 2,-2\). Even if cancellation appears after multiplication, do not forget the original domain.

Which concept should I revise for this Mathematics MCQ?

(x-2-4=(x-2)(x+2)), so \(x\ne 2,-2\). Even if cancellation appears after multiplication, do not forget the original domain.

What exam hint can help solve this Mathematics question?

(x-2-4=(x-2)(x+2)), इसलिए \(x\ne 2,-2\)। गुणा के बाद कटाव दिखे तो भी मूल डोमेन न भूलें।