यदि (f(x)=2x-1) और (g(x)=x-2+1) हों, तो ((f+g)(x)) का न्यूनतम मान क्या है?
If (f(x)=2x-1) and (g(x)=x-2+1), what is the minimum value of ((f+g)(x))?
Explanation opens after your attempt
A. (0)
Concept
((f+g)(x)=x-2+2x=(x+1)2-1), so the minimum is (-1). Be careful because \(2x-1+x^2+1=x^2+2x\).
Why this answer is correct
The correct answer is A. (0). ((f+g)(x)=x-2+2x=(x+1)2-1), so the minimum is (-1). Be careful because \(2x-1+x^2+1=x^2+2x\).
Exam Tip
((f+g)(x)=x-2+2x=(x+1)2-1) नहीं, सही योग (x-2+2x=x(x+2)) का न्यूनतम (-1) होता है। ध्यान दें \(2x-1+x^2+1=x^2+2x\)।
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