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