z=e^xsiny,x=cosy,求dz/dy,
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z=e^xsiny,x=cosy,求dz/dy,
z=e^xsiny,x=cosy,求dz/dy,
z=e^xsiny,x=cosy,求dz/dy,
Z=e^sinycosy=e^(1/2sin2y)
dz/dy=[e^(1/2sin2y)]'=e^(1/2sin2y) * (1/2sin2y)'=e^(1/2sin2y) * cos2y
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其实我是想问这个,z=e^x*siny,x=cosy,求dz/dy.求帮助呀~
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