यदि (f(x)=x+1) और (g(x)=\frac{1}{x+1}) हों, तो ((fg)(x)) का value किसके बराबर है?
If (f(x)=x+1) and (g(x)=\frac{1}{x+1}), what is the value of ((fg)(x))?
Explanation opens after your attempt
Correct Answer
A. \(1,\ x\neq -1\)
Concept
((fg)(x)=(x+1)\cdot\frac{1}{x+1}=1), but (x=-1) is not allowed. Always check the denominator in a reciprocal function.
Why this answer is correct
The correct answer is A. \(1,\ x\neq -1\). ((fg)(x)=(x+1)\cdot\frac{1}{x+1}=1), but (x=-1) is not allowed. Always check the denominator in a reciprocal function.
Exam Tip
((fg)(x)=(x+1)\cdot\frac{1}{x+1}=1), पर (x=-1) allowed नहीं है। reciprocal वाली function में denominator check करें।
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