若则
(1)求f(x)
(2)
暂无解析
设A,B是两随机事件,则事件AB表示()
________fromtheoccasionallatenightparty,ourneighborsareveryquiet.
Theaddressbook________theemailaddressesofyourfriendsorgroupsofcolleagues.
过(0,1)点作曲线L:y=lnx的切线,切点为A,又L与x轴交于B点,区域D由L与直线AB围成,求区域D的面积及D绕x轴旋转一周所得旋转体的体积.
求曲线y=x^2与直线y=0,x=1所围成的平面图形绕x轴旋转一周所得旋转体的体积V.