If and , then the derivative of at…

MATHEMATICS · Single correct · CBSE · Mathematics · Continuity and Differentiability · Continuity and Differentiability

Problem

If

f(1)=1

and

f'(1)=3

, then the derivative of

f(f(f(x)))+(f(x))^2

at

x=1

is (a) 33 (b) 12 (c) 15 (d) 9

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