d^2y/dx^2+a^2y-b^2=0 求解=_=d^2y/dx^2+a^2y-b^2=0求解=_=
问题描述:
d^2y/dx^2+a^2y-b^2=0 求解=_=
d^2y/dx^2+a^2y-b^2=0
求解=_=
答
d^2y/dx^2+a^2y-b^2=0 求解=_=
d^2y/dx^2+a^2y-b^2=0
求解=_=