解微分方程 (siny-ysinx)dx+(xcosy+cosx)dy=0
问题描述:
解微分方程 (siny-ysinx)dx+(xcosy+cosx)dy=0
答
(siny-ysinx)dx+(xcosy+cosx)dy=0
sinydx+ydcosx+xdsiny+cosxdy=0
dxsiny+dycosx=0
xsiny+ycosx=C