oo / | | x | ------ dx | 3 | x + 3 | / 2
Integral(x/(x^3 + 3), (x, 2, oo))
/ ___ 6 ___\ / 6 ___ | \/ 3 2*x*\/ 3 | | 2/3 / 3 ___\ \/ 3 *atan|- ----- + ---------| 2/3 / 2/3 2 3 ___\ | x 3 *log\x + \/ 3 / \ 3 3 / 3 *log\3 + x - x*\/ 3 / | ------ dx = C - ------------------- + ------------------------------- + ----------------------------- | 3 9 3 18 | x + 3 | /
/ / pi*I\ / 5*pi*I\\ | -pi*I | ----| pi*I | ------|| | / 3 ___ pi*I\ ------ | 3 ___ 3 | ---- | 3 ___ 3 || | 2/3 | \/ 3 *e | 2/3 3 | \/ 3 *e | 2/3 3 | \/ 3 *e || |2*3 *log|1 - -----------| 2*3 *e *log|1 - -----------| 2*3 *e *log|1 - -------------|| | \ 2 / \ 2 / \ 2 /| |--------------------------- - ----------------------------------- - -----------------------------------|*Gamma(1/3) \ 9 9 9 / -------------------------------------------------------------------------------------------------------------------- 6*Gamma(4/3)
=
/ / pi*I\ / 5*pi*I\\ | -pi*I | ----| pi*I | ------|| | / 3 ___ pi*I\ ------ | 3 ___ 3 | ---- | 3 ___ 3 || | 2/3 | \/ 3 *e | 2/3 3 | \/ 3 *e | 2/3 3 | \/ 3 *e || |2*3 *log|1 - -----------| 2*3 *e *log|1 - -----------| 2*3 *e *log|1 - -------------|| | \ 2 / \ 2 / \ 2 /| |--------------------------- - ----------------------------------- - -----------------------------------|*Gamma(1/3) \ 9 9 9 / -------------------------------------------------------------------------------------------------------------------- 6*Gamma(4/3)
(2*3^(2/3)*log(1 - 3^(1/3)*exp_polar(pi*i)/2)/9 - 2*3^(2/3)*exp(-pi*i/3)*log(1 - 3^(1/3)*exp_polar(pi*i/3)/2)/9 - 2*3^(2/3)*exp(pi*i/3)*log(1 - 3^(1/3)*exp_polar(5*pi*i/3)/2)/9)*gamma(1/3)/(6*gamma(4/3))
Estos ejemplos se pueden aplicar para introducción de los límites de integración inferior y superior.