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# Suppose $f$ is differentiable on $\mathbb{R}.$ Let $F(x) = f(e^x)$ and $G(x) = e^{f(x)}.$ Find expressions for (a) $F'(x)$ (b) $G'(x).$

## a. $=f^{\prime}\left(e^{x}\right) e^{x}$b. $=e^{f(x)} f^{\prime}(x)$

Derivatives

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YL

Yang L.

March 31, 2021

(a) Find the differential dy. y = 1 x + 2

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### Video Transcript

here we have capital F of X, which is a composite function with little F as the outside function and eat of the X as the inside function. So it's derivative. Using the chain rule would be the derivative of the outside F prime of E to the X Times, the derivative of the inside E to the X. And then we have capital G of X, also a composite function. It's outside function is the each of the X function and it's inside. Function is f of X, so it's derivative would be the derivative of the outside e to the f of x times, the derivative of the inside F prime of X.

Oregon State University

Derivatives

Differentiation

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