求定积分 ∫(-2,2)[x^3cos(x／2)+1／2]√(4-x^2)dx

wintex

請問積分

luyuanhong

Ysu2008

0.00000000
2.00000000 ,2.66666667
2.73205081 ,2.97606774 ,2.99669448
2.99570907 ,3.08359515 ,3.09076365 ,3.09225681
3.08981914 ,3.12118917 ,3.12369544 ,3.12421816 ,3.12434350
3.12325304 ,3.13439767 ,3.13527824 ,3.13546209 ,3.13550618 ,3.13551710
3.13510242 ,3.13905222 ,3.13936252 ,3.13942735 ,3.13944290 ,3.13944675 ,3.13944771
3.13929691 ,3.14069508 ,3.14080460 ,3.14082749 ,3.14083298 ,3.14083434 ,3.14083468 ,3.14083476

龙贝求积都这么慢？这函数啥来头？