![]() ![]() the derivative of f (g (x)) = f' (g (x))g' (x) The individual derivatives are: f' (g) = cos (g) g' (x) = 2x So: d dx sin (x 2) = cos (g (x)) (2x) = 2x cos (x 2) Another way of writing the Chain … Find (f o f ) (x) | Wyzant Ask An Expert. The function g (x) is called an inner function and the function f (x) is called an outer function. The composite function f is read as “f of g of x”. x must be in the domain of g, which means x is a real number (pretty easy to do) g(x) must be in the … Composite Functions – Explanation
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