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Given f(X) = 5x^4 - 20x^3 +10 a) Determine the intervals on which f is concave up or concave down. b) Identify any inflection point

Given f(X) = 5x^4 - 20x^3 +10

a) Determine the intervals on which f is concave up or concave down.

b) Identify any inflection point (s).

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