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Suppose that f(x)=x^4-3x^3. (A) List all the critical values of f(x). Note: If there are no...

Suppose that f(x)=x^4-3x^3.

(A) List all the critical values of f(x). Note: If there are no critical values, enter 'NONE'

(B) Use interval notation to indicate where f(x) is increasing.
Note: Use 'INF' for ∞, '-INF' for −∞, and use 'U' for the union symbol.

(C) Use interval notation to indicate where f(x) is decreasing.

(D) List the xx values of all local maxima of f(x). If there are no local maxima, enter 'NONE'.

(E) List the xx values of all local minima of f(x). If there are no local minima, enter 'NONE'.

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