1 / | | 1 | ------------ dx | 2 | x + 4*x + 1 | / 0
Integral(1/(x^2 + 4*x + 1), (x, 0, 1))
// / ___ \ \ || ___ |\/ 3 *(2 + x)| | ||-\/ 3 *acoth|-------------| | / || \ 3 / 2 | | ||---------------------------- for (2 + x) > 3| | 1 || 3 | | ------------ dx = C + |< | | 2 || / ___ \ | | x + 4*x + 1 || ___ |\/ 3 *(2 + x)| | | ||-\/ 3 *atanh|-------------| | / || \ 3 / 2 | ||---------------------------- for (2 + x) < 3| \\ 3 /
___ / ___\ ___ / ___\ ___ / ___\ ___ / ___\ \/ 3 *log\2 - \/ 3 / \/ 3 *log\3 + \/ 3 / \/ 3 *log\2 + \/ 3 / \/ 3 *log\3 - \/ 3 / - -------------------- - -------------------- + -------------------- + -------------------- 6 6 6 6
=
___ / ___\ ___ / ___\ ___ / ___\ ___ / ___\ \/ 3 *log\2 - \/ 3 / \/ 3 *log\3 + \/ 3 / \/ 3 *log\2 + \/ 3 / \/ 3 *log\3 - \/ 3 / - -------------------- - -------------------- + -------------------- + -------------------- 6 6 6 6
-sqrt(3)*log(2 - sqrt(3))/6 - sqrt(3)*log(3 + sqrt(3))/6 + sqrt(3)*log(2 + sqrt(3))/6 + sqrt(3)*log(3 - sqrt(3))/6
Estos ejemplos se pueden aplicar para introducción de los límites de integración inferior y superior.