Question: A point moves along the x-axis with its position, x, given by x(t) = 3t^4 - 8t^3 + 5 At which of the following values

A point moves along the x-axis with its position, x, given by

x(t) = 3t^4 - 8t^3 + 5

At which of the following values of t does it change direction?

A. 0

B. 1

C. 2

D. 0 and 2

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