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