oo / | | 1 | ---------------- dx | 2 | 4*x + 12*x + 13 | / -oo
Integral(1/(4*x^2 + 12*x + 13), (x, -oo, oo))
/ | | 1 | ---------------- dx | 2 | 4*x + 12*x + 13 | /
1 1 ---------------- = ------------------- 2 / 2 \ 4*x + 12*x + 13 4*\(-x - 3/2) + 1/
/ | | 1 | ---------------- dx | 2 = | 4*x + 12*x + 13 | /
/ | | 1 | --------------- dx | 2 | (-x - 3/2) + 1 | / --------------------- 4
/ | | 1 | --------------- dx | 2 | (-x - 3/2) + 1 | / --------------------- 4
v = -3/2 - x
/ | | 1 | ------ dv | 2 | 1 + v | / atan(v) ------------ = ------- 4 4
/ | | 1 | --------------- dx | 2 | (-x - 3/2) + 1 | / atan(3/2 + x) --------------------- = ------------- 4 4
atan(3/2 + x) C + ------------- 4
/ | | 1 atan(3/2 + x) | ---------------- dx = C + ------------- | 2 4 | 4*x + 12*x + 13 | /
Estos ejemplos se pueden aplicar para introducción de los límites de integración inferior y superior.