Question

Determine a derivada de f(x) = (3x - 1)(2x + 1).


A) f'(x) = 12x + 1


B) f'(x) = 6x - 1


C) f'(x) = 6x - 1


D) f'(x) = 12x - 1


E) f'(x) = 6x2 + x - 1

Answer 1

$f(x) = 6 {x}^{2} + 3x - 2x - 1 = 6 {x}^{2} + x - 1$
f'(x)=(6×2)x + 1 = 12x + 1
alternativa A