作者goshfju (cola)
看板FJU_CLASS
标题[考题] 日/数学/叶乃实/微分方程
时间Wed Jan 24 23:42:47 2007
下学期期中考 没答案喔 因为我还没修看无
1.y=2xy'+(y^2)(y'^3) please solve y(x)
2.given a curve C:y=x^2, please find a member of the family of involutes of C.
3.xy(y'')-x(y'^2)=x√(y^2+y'^2) please find y(x)
4.((5x+1)^2)y''+(25x^2-65x-14)y'+75y=0 please find the series solution of
y(x) at x=-1/5
5.送分 题目出错的样子
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