यदि (f(x)=2x-7) और (g(x)=x+5) हों, तो ((f+g)(3)) का मान क्या है?
If (f(x)=2x-7) and (g(x)=x+5), what is the value of ((f+g)(3))?
Explanation opens after your attempt
A. (7)
Concept
(f(3)=-1) and (g(3)=8), so ((f+g)(3)=7). Direct substitution is the safest method.
Why this answer is correct
The correct answer is A. (7). (f(3)=-1) and (g(3)=8), so ((f+g)(3)=7). Direct substitution is the safest method.
Exam Tip
(f(3)=-1) और (g(3)=8), इसलिए ((f+g)(3)=7)। direct substitution सबसे सुरक्षित तरीका है।
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