定积分习题(3)
来源:百度知道 编辑:UC知道 时间:2024/05/16 00:39:00
积分,上限4分之π,下限负4分之π,分母1-e^(-x)分子cos^2 x
int(cos(x)^2/(1-exp(-x)),-pi/4,pi/4)
Warning: Explicit integral could not be found.
THis is a IMPROPER integral
AND int(cos(x)^2/(1-exp(-x)),0,pi/4) fail to exist
METHOD :limit(x*cos(x)^2/(1-exp(-x)),x,0)=1
你可能是看错题了