f(x)=sinx,求导f('f(x)),f(f'(x)),[f(f(x))]'
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f(x)=sinx,求导f('f(x)),f(f'(x)),[f(f(x))]'
![f(x)=sinx,求导f('f(x)),f(f'(x)),[f(f(x))]'](/uploads/image/z/17637486-6-6.jpg?t=f%28x%29%3Dsinx%2C%E6%B1%82%E5%AF%BCf%28%27f%28x%29%29%2Cf%28f%27%28x%29%29%2C%5Bf%EF%BC%88f%28x%29%EF%BC%89%5D%27)
f(x) = sinx
f(f(x)) = sin(sinx)
第一个不知道你写的什么.
f'(x) = cosx
f(f'(x)) = sin(cosx)
[f(f(x))]'
= df(f(x))/df(x) * df(x)/dx
= cos(sinx) * cosx
= cosxcos(sinx)
f(f(x)) = sin(sinx)
第一个不知道你写的什么.
f'(x) = cosx
f(f'(x)) = sin(cosx)
[f(f(x))]'
= df(f(x))/df(x) * df(x)/dx
= cos(sinx) * cosx
= cosxcos(sinx)
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