Question

1- For the following functions, find all critical numbers exactly. f(x) = x − 2 sin...

1- For the following functions, find all critical numbers exactly.

f(x) = x − 2 sin x for −2π < x < 2π

f(x) = e^−x −e^−3x for x > 0

f(x) = x^5 − 2x^3

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