यदि (f(x)=x-2-1) और (g(x)=x+2), तो (\(f\circ g\)(x)) और (\(g\circ f\)(x)) के बारे में सही कथन कौन-सा है?
If (f(x)=x-2-1) and (g(x)=x+2), which statement about (\(f\circ g\)(x)) and (\(g\circ f\)(x)) is correct?
Correct answer and explanation
A. दोनों सामान्यतः समान नहीं हैंThey are generally not equal
Concept
(\(f\circ g\)(x)=f(x+2)=(x+2)2-1)। / (\(f\circ g\)(x)=f(x+2)=(x+2)2-1).
Why this answer is correct
(\(g\circ f\)(x)=g\(x^2-1\)=x-2+1)। / (\(g\circ f\)(x)=g\(x^2-1\)=x-2+1).
Exam Tip
दोनों व्यंजक सामान्यतः अलग हैं, इसलिए संयुक्त फलन में क्रम का ध्यान रखें। / The expressions are generally different, so order matters in composition.
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