更多"设z=f(x+y,xy)=x2+y2-xy,则dz=()。"的相关试题:
[简答题]设方程ez=y+xz+x2+y2确定隐函数z=z(x,y),求dz与z"xy.
[简答题]设z=z(x,y)由ez-z+xy=3所确定,求dz.
[简答题]已知函数z=f(x,y)由方程e-xy-2z+ez=0所确定,求dz.
[简答题]设z=z(x,y)由方程ez-xy2+x+z=0确定,求dz.
[填空题]设z=f(t),t=φ(xy,x2+y2),f,φ均可导,则dz=______.
[简答题]设z=sin(xy2)+ex2y,求dz.
[简答题]设z=z(x,y)是由方程x2+2y2+xy+z2=0所确定的隐函数,求全微分dz.
[简答题]设z=z(x,y)由方程ez-xy2+sin(y+z)=0确定,求dz,
[填空题]已知z=f(x+y,xy),其中f为可微函数,则dz=______.
[简答题]设z=z(x,y)由方程exz-xy+cos(y2+z2)=0确定,求dz.
[填空题]设z=x2+y2-xy,则dz=______.
[填空题]设z=sin(xy)+2x2+y,则dz=().
[简答题]设z=z(x,y)是由方程x+xy+xyz=ez所确定的隐函数,求dz。
[填空题]设函数z=ln(1+xy),则dz=______