Question

At which point does the function f(x) = 96xex3+7x−1 have a horizontal tangent line? (A) (−1.16667,...

At which point does the function f(x) = 96xex3+7x−1 have a horizontal tangent line?

(A) (−1.16667, −0.002391) (B) (−0.297763, 0)
(C) (1.59449, −1.86152) (D) (−0.141639, −1.85069) (E) (−0.297763, −1.42934)

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