

(int )_(1)^esin (ln x)dx; ;
(int )_(1)^edfrac (ln x)(x)dx..
int cos (ln x)dx..
[题目] int cos (ln x)dx.
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..
计算定积分(int )_(1)^edfrac (2+ln x)(x)dx.计算定积分.
求定积分(int )_(0)^4ln (sqrt (x)+1)dx.求定积分.
=(int )_(-1)^1(f(x)+f(-x)+x} cdot ln (sqrt (1+{x)^2}+x)dx..
14、计算定积分int_(1)^e(ln^2x)/(x)dx.14、计算定积分$\int_{1}^{e}\frac{\ln^{2}x}{x}dx$.