[" et "T_(1)=int_(16)^(1)(sin x)/(x)dx,I_(2)=int_(pi/6)^( pi)(sin(sin x))/(sin x)dxquad I_(3)=int_(pi/6)^( pi/6)(sin(tan x))/(tan x)dx," then "],[[" 1."

int_(pi/6)^( pi/3)sin(3x)dx

Let I_(1)=int_((pi)/(6))^((pi)/(3))(sin x)/(x)dx,I_(2)=int_((pi)/(6))^((pi)/(3))(sin(sin x))/(sin x)dx,I_(3)=int_((pi)/(6))^((pi)/(6))(sin(tan x))/(tan x)dxI_(1),I_(2),I_(3) lie.

int_(0)^( pi)(x sin(x))/(1+sin(x))dx

int_(pi//6)^(pi//3) sin(3x)dx=

int_(pi//6)^(pi//3) sin(3x)dx=

int_(0)^(pi)(x sin x)/(1-sin x)dx=

int_(-pi)^( pi)(sin^(2)x)/(1+a^(x))dx

int_(0)^( pi)(x sin x)/(1+sin x)dx

int_(pi/6)^(pi/3) (sin x+ cos x)/(sqrt(sin 2x))dx