2.7 The Derivative: Quiz

Problem 5

Let f(x) = 5x3 + 4x + 1. Find f′(x), f′′(x), and f′′′(x).

Answers, problem 5

f′(x) = 15x2 + 4
f′′(x) = 30x
f′′′(x) = 30

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