f'(x) = 3cos(3x) + 84x^2f''(x) = -9sin(3x) + 168x
Подставляем x=0:
f'(0) = 3cos(0) + 840^2 = 3f''(0) = -9sin(0) + 1680 = 0
Ответ: f'(0) = 3, f''(0) = 0.
f'(x) = 3cos(3x) + 84x^2
f''(x) = -9sin(3x) + 168x
Подставляем x=0:
f'(0) = 3cos(0) + 840^2 = 3
f''(0) = -9sin(0) + 1680 = 0
Ответ: f'(0) = 3, f''(0) = 0.