答:
∫[1/(1+√x)]dx 设x=t^2∈[1,4],1答案是+号啊定积分=2-2ln(3/2)=2+2ln(2/3)
猜你喜欢
- 1中国历史有哪些科学家
- 2how long does ben play soccer with the boys翻译
- 3在51,61,71,81,91这五个数中,素数有
- 4一项工作甲先做1.5小甲时后,乙加入共同完成,完成任务时甲完成任务的5/8,已知甲与乙的工效比是3:2,
- 5The story happened in London before the second world war
- 6求液体的沸点!
- 7铁在水中为什么更容易生锈,在空气中反应吗?
- 8On my way back to the hotel last night,I lost my way in the complete darkness and,____ things worse,it began to pour.
- 9(2007•武汉模拟)(文)如果函数f(x)=x2-bx+2在闭区间[-1,2]上有反函数,那么实数b的取值范围( ) A.(-∞,2] B.(-∞,-4]∪[2,+∞) C.[-2,+∞) D.(-∞,-2]∪[4,+∞)
- 10Do you know how to get to the post office?(改同义句)