【大学高等数学急救原题如下:solvetheinitialvalueproblem.y''+xy'+(2x^2+1)y=0,y(0)=1,y'(0)=-1.Calculateanapproximatevalueofy(1/2)usingthefirstfivetermsofthepowerseries.Howmuchwouldthisvaluechangeifyouinsteadusedthe】

　　大学高等数学急救

　　原题如下:

　　solvetheinitialvalueproblem.

　　y''+xy'+(2x^2+1)y=0,y(0)=1,y'(0)=-1.

　　Calculateanapproximatevalueofy(1/2)usingthefirstfivetermsofthepowerseries.Howmuchwouldthisvaluechangeifyouinsteadusedthefirstsixtermsofthepowerseries?

　　不可以用matlab