d^2y/dx^2=a-(dy/dx)^2*(1/y)
d^2y/dx^2=a-(dy/dx)^2*(1/y)
试从dx/dy=1/y'导出:d^2x/dy^2=-y''/(y')^3 题目中关于d[1/y']/dx}*[dx/dy
参数方程的二阶导数中d^2y/dx^2=(d/dx)(dy/dx)=(d/dt)(1/dx/dt)(dy/dx),是一个
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=...
从(dx)/(dy)=1/y '导出:(d^2x)/(dy^2)=-y''/(y')^3
d^2y/dx^2=d(dy/dx)/dx二阶导数问题
(x^2)dy+(y^2)dx=dx-dy
高阶导数,dx/dy=1/y',怎样推导d^2y/dx^2=(-y'')/(y')^3.
高数中若dy/dt=(dy/dx)*cost 那么d^2 y/dx^2 怎么求
求微分方程的通解:x^2(d^2y/dx^2)=(dy/dx)^2+2x(dy/dx)
d/dx((x^2+y^2)^2)=d/dx(x^2-y^2),求(化简)dy/dx=?
d^2y /dx^2 - 24 =0 dy/dx -2y = e^-x