xy^3-cos(x+y)=1,求dy
x^2+xy+y^3=1,求dy/dx
设e^(x+y)+cos(xy)=0确定y是x的函数求dy
cos(x+y)+y=1 求dy/dx
y=(1+x^4)^cos x,求dy
设y=y(x)由方程e^xy+cos(xy)=y确定,求dy(0).
下面都是求微分方程的通解:1、(y^-2xy)dx+x^2dy=0 2、(x^2+y^2)dy/dx=2xy 3、xy’
设y=cos^2(x+1),求dy
1,y=e^tanxcos^3x,求dy 2,函数y=y(x)由方程e^(x+y)+arctan(xy)=0确定,求dy
x^2+y^2-xy+3x=1 求dy
y=cos(1-3x),dy=( )
设y=[cos (1/x)]^3,则dy=
求一阶微分方程dy/dx=1/(xy+x^2*y^3)通解