求不定积分xlnxdx

要过程
2024-11-29 16:06:04
推荐回答(1个)
回答1:

∫xlnxdx
=0.5∫lnxd(x²)
=0.5x²lnx-0.5∫x²d(lnx)
=0.5x²lnx-0.5∫xdx
=0.5x²lnx-0.25x²+C