高数课程妥媒血课件 镭理工大理>> (443 +o sine=0 (5)F(x,y,y,…y()=0 a2u =0 Oxa o2u au au__4TP (7)2+ 十 2 ax a az 2 x(ax+ by+c) (8) y(ex+fy+ Httpd w w.h eu(4) sin 0 2 2 + + θ = θ θ l g dt d h dt d (5) ( , , , ) 0 ( )  = n F x y y y (6) 0 2 =    x y u (7) 4πρ 2 2 2 2 2 2 = −   +   +   z u y u x u      = + + = + + ( ) ( ) (8) y ex fy g dt dy x ax by c dt dx