作者LuisSantos (^______^)
看板trans_math
标题Re: [微分] 77淡江
时间Wed Dec 5 12:34:44 2007
※ 引述《bitchdog (PEaCE)》之铭言：
: f(x)=sec^2(3x-1) , then f'(x)
2
f(x) = sec (3x-1)
d
f'(x) = (2)(sec(3x - 1))(----(sec(3x - 1))
dx
d
= (2)(sec(3x - 1))(sec(3x - 1))(tan(3x - 1))(----(3x - 1))
dx
= (2)(sec(3x - 1))(sec(3x - 1))(tan(3x - 1))(3)
2
= (6)(sec (3x - 1))(tan(3x - 1))
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