यदि (f(x)=2x+3) और (\(f\circ f\)(x)=17), तो (x) का मान क्या है?
If (f(x)=2x+3) and (\(f\circ f\)(x)=17), what is the value of (x)?
Explanation opens after your attempt
B. (2)
Concept
(\(f\circ f\)(x)=f(2x+3)=2(2x+3)+3=4x+9).
Why this answer is correct
(4x+9=17), so (4x=8).
Exam Tip
Therefore, (x=2). चरण 1: (\(f\circ f\)(x)=f(2x+3)=2(2x+3)+3=4x+9)। चरण 2: (4x+9=17), इसलिए (4x=8)। चरण 3: अतः (x=2) है।
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