1 / | | 1 | -------------- dx | 2 | 4*x + 4*x + 5 | / 0
Integral(1/(4*x^2 + 4*x + 5), (x, 0, 1))
/ | | 1 | -------------- dx | 2 | 4*x + 4*x + 5 | /
1 1 -------------- = ------------------- 2 / 2 \ 4*x + 4*x + 5 4*\(-x - 1/2) + 1/
/ | | 1 | -------------- dx | 2 = | 4*x + 4*x + 5 | /
/ | | 1 | --------------- dx | 2 | (-x - 1/2) + 1 | / --------------------- 4
/ | | 1 | --------------- dx | 2 | (-x - 1/2) + 1 | / --------------------- 4
v = -1/2 - x
/ | | 1 | ------ dv | 2 | 1 + v | / atan(v) ------------ = ------- 4 4
/ | | 1 | --------------- dx | 2 | (-x - 1/2) + 1 | / atan(1/2 + x) --------------------- = ------------- 4 4
atan(1/2 + x) C + ------------- 4
/ | | 1 atan(1/2 + x) | -------------- dx = C + ------------- | 2 4 | 4*x + 4*x + 5 | /
atan(1/2) atan(3/2) - --------- + --------- 4 4
=
atan(1/2) atan(3/2) - --------- + --------- 4 4
-atan(1/2)/4 + atan(3/2)/4
Estos ejemplos se pueden aplicar para introducción de los límites de integración inferior y superior.