作者qaz7788123 (水晶仔)
看板FJU_CLASS
标题[考题] 日/物理系物理组/971应数期中考题/吕秀镛
时间Sat Nov 15 00:44:00 2008
Solve the following differential equations
1. y" + 5y' + 6y = 108x^2 , y(0) = 18 , y'(0) = 26
2. (x^2)y" + xy' - 4y = (x^2)lnx
3. yy" = 2(y'^2)
4. y" - 4y + 5y = (e^2x)cscx
5. (x - y)dx + (x + y)dy = 0
6. (x^2)y' + y = 2(x^3)(e^1/x)
7. xy' + (x + 1)y = (e^x)(y^2)
Apply the iteration method to y' = x + y , y(0) = 0
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