先求不定积分∫ lnx/√x dx=2∫ lnx d(√x) （分部积分法）=2√xlnx - 2∫ √x/x dx=2√xlnx - 2∫ 1/√x dx=2√xlnx - 4√x + C再把上下限代入相减即可,这个很简单,因为不好输入,我就不帮你写了.满意请采纳哦,谢谢~
is so heavy but that by prayer and repent
