.
[题目] int cos (ln x)dx.
(int )_(1)^esin (ln x)dx.
(int )_(1)^edfrac (ln x)(x)dx..
求int dfrac (cos x)(sin x+cos x)dx.求.
计算定积分(int )_(1)^edfrac (ln x)(x)dx.计算定积分
int dfrac (1+ln x)({(xln x))^2}dx..
int dfrac (ln tan x)(cos xsin x)dx
求不定积分int(x)/(1+cos x)dx.19.(5.0分)求不定积分$\int\frac{x}{1+\cos x}dx$.
(4)计算不定积分 int cos sqrt (x)dx.
计算定积分(int )_(1)^edfrac (2+ln x)(x)dx.计算定积分.