d/dx((x^2+y^2)^2)=d/dx(x^2-y^2),求(化简)dy/dx=?
d/dx((x^2+y^2)^2)=d/dx(x^2-y^2),求(化简)dy/dx=?
求微分方程的通解:x^2(d^2y/dx^2)=(dy/dx)^2+2x(dy/dx)
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=...
已知dx/dy=1/y′,求d(2)y/d x^2?
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
d^2y /dx^2 - 24 =0 dy/dx -2y = e^-x
(x^2)dy+(y^2)dx=dx-dy
设y=2arctany/x,求dy/dx,dy^2/d^2x.
dx/dy=1/y',求d^2x/dy^2 .为什么d^2x/dy^2不等于dx/dy求导?一个是二阶导数,一个是一阶导
已知(dy/dx)=(1/y) ,求 (d^2y)/(d^2x)=?注意:不是求(d^2y)/(dx^2)
y=[sin(x^4)]^2,则dy/dx=?,dy^2/dx^2=?,dy/d(x^2)=?
微分方程(d^2y/dx^2)^2=x^2*(dy/dx)怎么解