设z=arctan(xy),而y=e^x,求全导数dz/dx
设z=arctan(xy),y=e的x次方,求dz/dx
偏导数 .急 设z=(e^u)sinv 而u=xy ,v=x+y 求 dz/dx,dz/dy
设函数z=xy-y/x,求全微分dz=
z=x*arctan(xy),求(dz/dx)|(1,1),(dz/dy)|(1,1)
设Z=f(x^2 +y,2xy),求dz/dx和dz/dy
z=f(x,y)是方程e^(-xy)-2z+e^z给出的函数,求全微分dz
设f(x,y)具有一阶连续偏导数,z=xf(x^y,e^xy),求dz
设函数z=f(x,y)由方程e^z=xyz+cos(xy)求dz/dx ,dz/dy.求详解
设方程e^z=xyz确定z为x,y的隐函数,求全微分dz(写出详细步骤,
设函数z=xyln(xy),求全微分dz
设z=u^2cosv^2,u=x+y,v=xy,求dz/dx,dz/dy.
设函数z=z(x,y)是由方程z+ez=xy所确定的隐函数,求全微分dz.