(x^2)dy+(y^2)dx=dx-dy
(x^2)dy+(y^2)dx=dx-dy
dy/dx-y/x=x^2
微分方程 dy/dx=(-2x)/y
d^2y/dx^2=(dy/dx)'×(dy/dx),另外请解释下dx,dy的含义,dx和dy是指x=...和y=...
2*x*y^2(dy/dx)- x^3(dy/dx)=2y^3
解方程y^2+x^2*(dy/dx)=x*y*(dy/dx)
dy/dx=x/2y dy/dx=x+y
dy/dx=x+y
解微分方程y^2+(x^2)(dy/dx)=xy(dy/dx)
Y=2-sinx.求dy/dx及dy/dx|x=0
y=[sin(x^4)]^2,则dy/dx=?,dy^2/dx^2=?,dy/d(x^2)=?
微分方程(x+y)(dx-dy)=dx+dy的通解