यदि (f(x)=x-2) और (g(x)=2x) हैं, तो ((f+g)(a)) का मान क्या है?
If (f(x)=x-2) and (g(x)=2x), what is the value of ((f+g)(a))?
Explanation opens after your attempt
A. \(a^2+2a\)
Concept
((f+g)(a)=f(a)+g(a)=a-2+2a). When the variable changes, replace every (x) by that value.
Why this answer is correct
The correct answer is A. \(a^2+2a\). ((f+g)(a)=f(a)+g(a)=a-2+2a). When the variable changes, replace every (x) by that value.
Exam Tip
((f+g)(a)=f(a)+g(a)=a-2+2a)। चर बदलने पर हर (x) की जगह वही मान रखें।
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