方程d^2y/dx^2+w^2y=0怎么解
如何验证y=coswx为方程d^2y/dx^2+w^2=0的解
参数方程求导这个问题怎么解释 d^2y/dx^2=[d/dt(dy/dx)]/dx/dt
设函数y=y(x)由方程y+e的(x+y)次方=2x所确定,求dy/dx,d^2y/dx^2.
(d^3y/dx^3)-2(d^2y/dx^2)-dy/dx+2y=0的通解怎么求?
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
微分方程(d^2y/dx^2)^2=x^2*(dy/dx)怎么解
微分方程d^2y/(dx)^2=y怎么解?最好有过程.
请教数学高手(d/dx)X^2+(d/dx)Y^2=0怎么推出2X+2Y(dy/dx)=0,是对X求导吗?
设y=y(x)是由方程xy+e^y=y+1所确定的隐函数,求d^2y/dx^2 x=0
证明x^2(d^2y/dx^2)+a_1x(dy/dx)+a_2y=0 ,令x=e^t,方程可化成d^2y/dt^2+(
已知y=cosx^2,求d^y/dx^2;d^y/dx^3..
设y=y(x)的反函数存在且满足方程d^2y/dx^2+(dy/dx)^3=0,证明反函数x=x(y)满足方程的d^2x