´ µ 2xcosy + [2y cosy − (x 2 + y2) sin y]y ´ µ xdy + ydx = 0 ´ µ 2x(sin y

Transcripción

´ µ 2xcosy + [2y cosy − (x 2 + y2) sin y]y ´ µ xdy + ydx = 0 ´ µ 2x(sin y