dy/dx=4x^2-y是线性方程吗
dy/dx=4x^2-y是线性方程吗
dx+(x-2e^y)dy=0 一阶线性方程
dy/dx-y/x=2x的平方,求一阶线性方程的解
dy/dx=1/(x+y).按一阶线性方程求解
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=...
(x^2)dy+(y^2)dx=dx-dy
dy/dx-y/x=x^2
微分方程dx/2(x+y^4)=dy/y
y=[sin(x^4)]^2,则dy/dx=?,dy^2/dx^2=?,dy/d(x^2)=?
题目是dy/dx=(2y-x+5)/(2x-y+4)
微分方程 dy/dx=(-2x)/y
设x^2+y^2=4,求dy/dx