Find the critical numbers of the function. (Enter your answers as a comma-separated list. If an answer does not exist, enter DNE.) f(x) = x^4 + 4x^3 - 8x^2 + 1
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First, let's find the derivative of the function f(x). \[ f'(x) = 4x^3 + 12x^2 - 16x \] Show more…
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