यदि (f(x)=x-2) और (g(x)=x+1) हैं तो (\(f\circ g\)(x)-\(g\circ f\)(x)) क्या है?
If (f(x)=x-2) and (g(x)=x+1) then what is (\(f\circ g\)(x)-\(g\circ f\)(x))?
Explanation opens after your attempt
Correct Answer
A. (x)
Concept
The correct calculation is ((x+1)2-\(x^2+1\)=2x), so option (B) is correct. Always expand both compositions before subtracting.
Why this answer is correct
The correct answer is A. (x). The correct calculation is ((x+1)2-\(x^2+1\)=2x), so option (B) is correct. Always expand both compositions before subtracting.
Exam Tip
(\(f\circ g\)(x)=(x+1)2) और (\(g\circ f\)(x)=x-2+1), अंतर (2x) नहीं बल्कि (2x)?
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