问题描述: 求不定积分∫e^2x * cos e^x dx 1个回答 分类:数学 2014-11-11 问题解答: 我来补答 ∫e^2x * cos e^x dx = ∫e^x * cos e^x d(e^x) = ∫y*cosydy ___________________y = e^x = ∫ydsiny = y*siny - ∫sinydy = y*siny +cosy + C= e^x*sin(e^x) + cos(e^x) + C 展开全文阅读