यदि (f(x)=x-1) और (g(x)=x+1) हों, तो ((f+g)(x)) और ((f-g)(x)) के बारे में सही pair कौन सा है?
If (f(x)=x-1) and (g(x)=x+1), which pair is correct for ((f+g)(x)) and ((f-g)(x))?
Explanation opens after your attempt
A. (2x,\ -2)
Concept
((f+g)(x)=2x) and ((f-g)(x)=(x-1)-(x+1)=-2). Perform plus and minus operations separately.
Why this answer is correct
The correct answer is A. (2x,\ -2). ((f+g)(x)=2x) and ((f-g)(x)=(x-1)-(x+1)=-2). Perform plus and minus operations separately.
Exam Tip
((f+g)(x)=2x) और ((f-g)(x)=(x-1)-(x+1)=-2)। plus और minus operations अलग-अलग करें।
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