Determine where the given function is concave up and where it is concave down. f(x) = 7x - x3
A. Concave up on (0, ?), concave down on (-?, 0)
B. Concave down for all t
C. Concave up on (-?, 0), concave down on (0, ?)
D. Concave up on (-?, 0) and (1, ?), concave down on (0, 1)
Answer: C
Mathematics
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