Let f(x) = x^4 - 72 x^2/7 (a) Use the definition of a derivative or the derivati

ID: 2874621 • Letter: L

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Let f(x) = x^4 - 72 x^2/7 (a) Use the definition of a derivative or the derivative rules to find f'(x) = (b) Use the definition of a derivative or the derivative rules to find f"(x) = (c) On what interval it f decreasing (include the endpoints in the interval)? (d) On what interval it f increasing (include the endpoints in the interval)? (c) On what interval is f concave downward (include the endpoints in the interval)? interval of increasing = (f) On what interval is f concave upward (include the endpoints in the interval)9 interv al of increasing =

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Let f(x) = x^4 - 72 x^2/7 (a) Use the definition of a derivative or the derivati

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