已知f’(x)=arctan(x-1)2,且f(0)=0,求
.
参考答案:分部积分两次得
解析: 已知被积函数的导数,常用分部积分法求其积分的值.
地中海贫血()。
A.慢性失血
B.造血干细胞缺陷
C.红细胞酶异常
D.红细胞膜缺陷
E.血红蛋白合成异常
He felt cheap about rushing to get in line before the old lady carrying heavy parcels.
A.felt inferior and ashamed
B.felt not worthwhile of doing something
C.felt bad about doing something
D.felt unhappy about doing something