Re: [微分] ８７政大資管
※ 引述《bitchdog (PEaCE)》之銘言：
: find f'(x) for f(x) =x^2 cos (x^2-3)
f(x) = (x^2)(cos(x^2 - 3))
d
f'(x) = (2x)(cos(x^2 - 3)) + (x^2)(-(sin(x^2 - 3)))(----(x^2 - 3))
dx
= (2x)(cos(x^2 - 3)) - (x^2)(sin(x^2 - 3))(2x)
= (2x)(cos(x^2 - 3)) - (2)(x^3)(sin(x^2 - 3))
--
※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 140.119.66.25
討論串 (同標題文章)