Determine where the given function is concave up and where it is concave down. q(x) = 6x3 + 2x + 3

A. Concave up for all x
B. Concave down for all x
C. Concave up on (-?, 0), concave down on (0, ?)
D. Concave up on (0, ?), concave down on (-?, 0)


Answer: D

Mathematics

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A.

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D.

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