∫上π/4下-π/4(1+x^2013)tan^2xdx

来源:学生作业帮助网 编辑:作业帮 时间:2024/11/25 13:34:11
∫上π/4下-π/4(1+x^2013)tan^2xdx
x){ԱɎ &Ovth C8#Cc͒ļ8 "}ِ` hTh>{Mݠ/?ٱO;ڀ !RO?o RlӣI Jf&Lũ`pE@]5J!F 1#<;OatF

∫上π/4下-π/4(1+x^2013)tan^2xdx
∫上π/4下-π/4(1+x^2013)tan^2xdx

∫上π/4下-π/4(1+x^2013)tan^2xdx
因为x^2013*tan^2(x)是奇函数,所以那个积分为0
所以原式=∫(-π/4→π/4)tan^2(x)dx
=∫(-π/4→π/4)(sec^2(x)-1)dx
=(tanx-x)|(-π/4→π/4)
=2-π/2