-2y = y ^ 2 /(xsin(x-y))をどのように微分しますか?

-2y = y ^ 2 /(xsin(x-y))をどのように微分しますか?
Anonim

回答:

#dy / dx = - (2sin(x-y)+ 2xcos(x-y))/(1-2xcos(x-y))#

説明:

再配置して簡単にすることができます。

#-2xsin(x-y)= y#

#d / dx y = d / dx -2 x sin(x-y)#

#d / dx y = d / dx -2x sin(x-y)-2xd / dx sin(x-y)#

#d / dx y = - 2sin(x-y)-2xd / dx sin(x-y)#

#d / dx y = - 2sin(x-y) - 2xcos(x-y)d / dx x-y#

#d / dx y = - 2sin(x-y) - 2xcos(x-y)(d / dx x - d / dx y)#

#d / dx y = - 2sin(x-y) - 2xcos(x-y)(d / dx x - d / dx y)#

chqainルールを使うと、 #d / dx = dy / dx * d / dy#

#dy / dxd / dy y = - 2sin(x-y) - 2xcos(x-y)(1-dy / dxd / dy y)#

#dy / dx = -2sin(x-y)-2xcos(x-y)(1-dy / dx)#

#dy / dx = -2sin(x-y)-2xcos(x-y)+ 2xcos(x-y)dy / dx#

#dy / dx-2xcos(x-y)dy / dx = -2sin(x-y)-2xcos(x-y)#

#dy / dx 1-2xcos(x-y) = - 2sin(x-y)-2 xcos(x-y)#

#dy / dx = - (2sin(x-y)+ 2xcos(x-y))/(1-2xcos(x-y))#