求下列方程的通解或满足给定初始条件的特解: (1)y’+1=xex+y (2) (3)(y+2xy2)dx+(x-2x2y)dy=0 (4)(1+x)y"+y’=0 (5)yy”一(y’)2=y4,y(0)=1,y’(0)=0 (6)y"+4y’+1=0

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问题 求下列方程的通解或满足给定初始条件的特解:
(1)y’+1=xex+y
(2)
(3)(y+2xy2)dx+(x-2x2y)dy=0
(4)(1+x)y"+y’=0
(5)yy”一(y’)2=y4,y(0)=1,y’(0)=0
(6)y"+4y’+1=0
(7)y"+9y=cos(2x+5)
(8)y"’一3y"+9y’+13y=e2xsin3x

选项

答案(1)e-y=[*] (2)x(csc(x+y)一cot(x+y))=C (3)[*] (4)y=C1ln|1+x|+C2 (5)[*] (6)[*] (7)[*] (8)[*]

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