⑩天掌 Teaching Plan on Advanced Mathematics o y'+y=3x eC+「3xelb =Cex+3x2-6x+6, 由yl=0=0,得C=-( 所求曲线为y=3(-2e-+x2-2x+2) tianjin polytechnic dmivendityTianjin Polytechnic University Teaching Plan on Advanced Mathematics      +  =  − y e C x e dx dx dx 2 3 3 6 6, 2 = + − + − Ce x x x | 0, 由 y x=0= 得 C = −6, 所求曲线为 3( 2 2 2). 2 = − + − + − y e x x x 2 y + y = 3x