y=[sin(x^4)]^2,则dy/dx=?,dy^2/dx^2=?,dy/d(x^2)=?
y=[sin(x^4)]^2,则dy/dx=?,dy^2/dx^2=?,dy/d(x^2)=?
(x^2)dy+(y^2)dx=dx-dy
y=sin[sin(x^2)] 则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=...
dy/dx-y/x=x^2
x=sin(y/x)+e^2 求dy/dx
微分方程 dy/dx=(-2x)/y
y=sin(x^2),dy/dx=?
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
求微分方程的通解:x^2(d^2y/dx^2)=(dy/dx)^2+2x(dy/dx)
从(dx)/(dy)=1/y '导出:(d^2x)/(dy^2)=-y''/(y')^3
设y=2arctany/x,求dy/dx,dy^2/d^2x.