यदि (f(x)=x-2-4x+5) और (g(x)=1-x) हों, तो ((f+g)(x)) का न्यूनतम मान क्या है?
If (f(x)=x-2-4x+5) and (g(x)=1-x), what is the minimum value of ((f+g)(x))?
Explanation opens after your attempt
A. \(-\frac{1}{4}\)
Concept
((f+g)(x)=x-2-5x+6=\(x-\frac{5}{2}\)2-\frac{1}{4}). Hence the minimum value is \(-\frac{1}{4}\).
Why this answer is correct
The correct answer is A. \(-\frac{1}{4}\). ((f+g)(x)=x-2-5x+6=\(x-\frac{5}{2}\)2-\frac{1}{4}). Hence the minimum value is \(-\frac{1}{4}\).
Exam Tip
((f+g)(x)=x-2-5x+6=\(x-\frac{5}{2}\)2-\frac{1}{4})। अतः न्यूनतम मान \(-\frac{1}{4}\) है।
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