⑩天掌 Teaching Plan on Advanced Mathematics o 例1求微分方"=c2x-cosx的通解 解对所给方程接连积分三次,得 sinx+C y'==e+cosx +Cx+C y=re+sinx+Cx+C2x+c C tianjin polytechnic laTianjin Polytechnic University Teaching Plan on Advanced Mathematics 例1 cos . 求微分方程y  = e 2x − x的通解 解 对所给方程接连积分三次，得 y e x C x  = − sin + 2 1 2 2 2 cos 4 1 y e x Cx C x  = + + + 2 3 2 1 2 sin 8 1 y e x C x C x C x = + + + +       = 2 1 C C