z=f(x/y,xy),求dz

z=f(x/y,xy),求dz z=f(xy,x^y),求dz. 设Z=f(x^2 +y,2xy),求dz/dx和dz/dy z=f(x,2x+y,xy),f有一阶连续偏导数,求dz 高数设z=f(e^xy,y/x),求dz急求答案考期中 z=f(x,y) xy+yz+xz=1 ,求dz 设z=f(2x+3y,e^xy),求dz 设z=f(xy,e^x+y),求dz高数计算题,坐等大侠 Z=f(x的y方,xy) 求dz 高数一 F(x/z,y/z)=0,求dz过程 设z=(x+y)^xy,求dz 设z=(x+2y)e^xy,求dz 设f(x+y,x-y)=xy,z=(xy,x/y),则dz= 已知z=f(xy,arccot y/x),求∂z/∂x,∂z/∂y,dz,∂^2f/∂x∂y 设函数z=f(x,y)由方程e^z=xyz+cos(xy)求dz/dx ,dz/dy.求详解 设f(x,y)具有一阶连续偏导数,z=xf(x^y,e^xy),求dz z=f(xy,y) 求dz求Z的全微分 设Z=f(2x+y)+g(x,xy),其中(t),g(u,v)皆可微,求dz