设f(x)为可导函数,求dy/dx (1)y=f(tanx) (2)y=f(x^2)+lnf(x)
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设f(x)为可导函数,求dy/dx (1)y=f(tanx) (2)y=f(x^2)+lnf(x)
![设f(x)为可导函数,求dy/dx (1)y=f(tanx) (2)y=f(x^2)+lnf(x)](/uploads/image/z/5290588-28-8.jpg?t=%E8%AE%BEf%28x%29%E4%B8%BA%E5%8F%AF%E5%AF%BC%E5%87%BD%E6%95%B0%2C%E6%B1%82dy%2Fdx+%281%29y%3Df%28tanx%29+%282%29y%3Df%28x%5E2%29%2Blnf%28x%29)
1) y'=f'(tanx)* (tanx)'=f'(tanx) *(secx)^2
2) y'=f'(x^2)*2x+f'(x)/f(x)
2) y'=f'(x^2)*2x+f'(x)/f(x)
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