# Differentiation of composite function

Calculus Level pending

Let $f(x)=2\sin \ x+\cos \ x , p(x)=(h\circ g\circ f )(x),$ where $$h(x)$$ and $$g(x)$$ are differentiable functions. If $$p'(0)=12,$$ what is the value of $$h'(g(1))g'(1)?$$

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