设z=xF(xy^2,e^(x的平方)再乘y),F有连续偏导数,求Zx,Zy
问题描述:
设z=xF(xy^2,e^(x的平方)再乘y),F有连续偏导数,求Zx,Zy
答
是这个意思吗:z=xF(xy²,(e^x²)y),那么记F=F(xy²,(e^x²)y),F1=dF/d(xy²),F2=dF/d[(e^x²)y],Fx=F1*d(xy²)/dx+F2*d[(e^x²)y]/dx=y²F1+2xy(e^x²)F2Fy=F1*d(xy²...