Question

Let f"(x)=4x^3-2x and let f(x) have critical values -1, 0, and 1. Determine which critical values give a relative maximum. A)-1 B)0 C)1 D)-1 and 1 E) none of these

Answer 1

look at f''(x) at -1,0,1
f"(-1) = -2
f"(0) = -
f"(1) = 2

(A)