1 / | | 2*x + 4 | ------------ dx | 2 | x + 2*x + 5 | / 0
Integral((2*x + 4)/(x^2 + 2*x + 5), (x, 0, 1))
/ | | 2*x + 4 | ------------ dx | 2 | x + 2*x + 5 | /
/2\ |-| 2*x + 4 2*x + 2 \4/ ------------ = ------------ + -------------- 2 2 2 x + 2*x + 5 x + 2*x + 5 / x 1\ |- - - -| + 1 \ 2 2/
/ | | 2*x + 4 | ------------ dx | 2 = | x + 2*x + 5 | /
/ | | 1 | -------------- dx | 2 | / x 1\ | |- - - -| + 1 | \ 2 2/ / | | / | 2*x + 2 -------------------- + | ------------ dx 2 | 2 | x + 2*x + 5 | /
/ | | 2*x + 2 | ------------ dx | 2 | x + 2*x + 5 | /
2 u = x + 2*x
/ | | 1 | ----- du = log(5 + u) | 5 + u | /
/ | | 2*x + 2 / 2 \ | ------------ dx = log\5 + x + 2*x/ | 2 | x + 2*x + 5 | /
/ | | 1 | -------------- dx | 2 | / x 1\ | |- - - -| + 1 | \ 2 2/ | / -------------------- 2
1 x v = - - - - 2 2
/ | | 1 | ------ dv | 2 | 1 + v | / atan(v) ------------ = ------- 2 2
/ | | 1 | -------------- dx | 2 | / x 1\ | |- - - -| + 1 | \ 2 2/ | / /1 x\ -------------------- = atan|- + -| 2 \2 2/
/1 x\ / 2 \ C + atan|- + -| + log\5 + x + 2*x/ \2 2/
/ | | 2*x + 4 /1 x\ / 2 \ | ------------ dx = C + atan|- + -| + log\5 + x + 2*x/ | 2 \2 2/ | x + 2*x + 5 | /
pi -atan(1/2) - log(5) + -- + log(8) 4
=
pi -atan(1/2) - log(5) + -- + log(8) 4
-atan(1/2) - log(5) + pi/4 + log(8)
Estos ejemplos se pueden aplicar para introducción de los límites de integración inferior y superior.