f(x,y,z)=In{[x^α+z^(1-α-β)]/y^β}+x/z+(z/x)^β,求 ∂f(x,y,z)/∂y

f(x,y,z)=In{[x^α+z^(1-α-β)]/y^β}+x/z+(z/x)^β,求 ∂f(x,y,z)/∂y F(x,y,z)=In(x^α+y^β)+z^(1-α-β),求 ∂f(x,y,z)/∂y 分解因式:f(x,y,z)=x^2(y-z)+y^2(z-x)+z^2(x-y) z=f(u) u=x/y,求x*∂z/∂x +y*z∂z/∂y (x+y-z)(x-y+z)= F(x/z,y/z)=0,求dz过程 设z=f(x^2-y^2,e^（xy)),求偏导z/x,偏导z/y f(x,y,z)=(x^2+y^2)^0.5+z^1.5,求 ∂f(x,y,z)/∂y 设z=f(x,y) 在概率论中,如何根据f(x,y)求f(z)(Z=|X+Y|或者Z=|X-Y|) 设Z=f(xz,z/y)确定Z为x,y的函数求dz X+Y+Z=? x/y=(x+z)/(y+z)y/z=(x+y)/(x+z) 设函数f可微,z=f(ye^x,x/(y^2)) 求z/x,z/y 设f(x,y,z)=e^x*y*z^2,其中z=z(x,y)是由x+y=z+x*e^(z-x-y)确定的隐函数,则f'x(0,1,1)= 已知 x/(y+z)+y/(z+x)+z/(x+y)=1求 (x*x)/(y+z)+(y*y)/(x+z)+(z*z)/(x+y)=? 设z=f(x,y)由方程z+x+y=e^(z+x+y)所确定,求Dz z=f(x*x-y*y,e的XY次方)求Z对X偏导 Z对Y偏导