1 常 用 积 分 公 式 (一)含有axb的积分(0a ) 1.dxaxb= 1 ln axbCa 2. () daxbx=11()(1) axbCa(1 ) 3.dxxaxb=21 (ln)axbbaxbCa 4.2dxxaxb=22311 ()2 ()ln2 axbb axbbaxbCa 5.d()xx axb=1 ln axbCbx 6.2d()xx axb=21lnaaxbCbxbx 7.2d()xxaxb=21 (ln)baxbCaaxb 8.22d()xxaxb=231 (2 ln)baxbbaxbCaaxb 9.2d()xx axb=211 ln()axbCb axbbx (二)含有axb的积分 10.daxb x=32()3axbCa 11.dx axb x=322(32 ) ()15axbaxbCa 12.2dxaxb x=222332(15128) ()105a xabxbaxbCa 13.dxxaxb=22 (2 )3axbaxbCa 2 14.2dxxaxb=22232(348)15a xabxbaxbCa 15.dxx axb=1 ln(0)2arctan(0)axbbCbbaxbbaxbCbbb 16.2dxxaxb=d2axbaxbxbx axb 17.daxb xx=d2xaxbbx axb 18.2daxb xx=d2axbaxxx axb (三)含有22xa的积分 19.22dxxa= 1 arctan xCaa 20.22d()nxxa=222122