Question

Lavender

答案是C嗎？怎麼算的呢

In each of questions, a function is given. Choose the altemative that is the
derivative of the function.
1. f(x) = x* sec(x3)
(A) 4x sec(x3)
C) 4x sec(x) + 3x sec(x) tan(x3)
(B) 4x sec(**) tan(x)
(D) 3x6 sec(x) tan(x)

微積分

Answer 1

wh.

是 先用乘法微分性質再用合成函數微分性質
（sec（x＾3）微分變3x＾2·sec（x＾3）tan（x＾3））