y=x+e^x,求dy/dx= y是方程Sin(xy)=x+y所确定的x函数,求dy/dx=?

如题所述

第1个回答  2020-08-18
∵y=x+e^x∴dy/dx=d(x+e^x)/dx=1+e^x.解另一题:∵sin(xy)=x+y==>d(sin(xy))=d(x+y)==>cos(xy)(xdy+ydx)=dx+dy==>(xcos(xy)-1)dy=(1-ycos(xy))dx∴dy/dx=(1-ycos(xy))/(xcos(xy)-1)
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