∫0+∞x3e-2xdx=________.

admin2019-09-04  21

问题0+∞x3e-2xdx=________.

选项

答案[*]

解析0+∞x3e-2xdx=0+∞(2x)3e-2xd(2x)0+∞t3e-tdt=
转载请注明原文地址:https://jikaoti.com/ti/U7nRFFFM
0

最新回复(0)