oo / | | 1 | -------------- dx | 2 | 2*x - 3*x + 4 | / 0
Integral(1/(2*x^2 - 3*x + 4), (x, 0, oo))
/ | | 1 | -------------- dx | 2 | 2*x - 3*x + 4 | /
1 1 -------------- = ------------------------------------ 2 / 2 \ 2*x - 3*x + 4 |/ ____ ____\ | ||-4*\/ 23 3*\/ 23 | | 23/8*||---------*x + --------| + 1| \\ 23 23 / /
/ | | 1 | -------------- dx | 2 = | 2*x - 3*x + 4 | /
/ | | 1 8* | ----------------------------- dx | 2 | / ____ ____\ | |-4*\/ 23 3*\/ 23 | | |---------*x + --------| + 1 | \ 23 23 / | / ------------------------------------- 23
/ | | 1 8* | ----------------------------- dx | 2 | / ____ ____\ | |-4*\/ 23 3*\/ 23 | | |---------*x + --------| + 1 | \ 23 23 / | / ------------------------------------- 23
____ ____ 3*\/ 23 4*x*\/ 23 v = -------- - ---------- 23 23
/ | | 1 8* | ------ dv | 2 | 1 + v | / 8*atan(v) -------------- = --------- 23 23
/ | | 1 8* | ----------------------------- dx | 2 | / ____ ____\ | |-4*\/ 23 3*\/ 23 | | |---------*x + --------| + 1 / ____ ____\ | \ 23 23 / ____ | 3*\/ 23 4*x*\/ 23 | | 2*\/ 23 *atan|- -------- + ----------| / \ 23 23 / ------------------------------------- = -------------------------------------- 23 23
/ ____ ____\ ____ | 3*\/ 23 4*x*\/ 23 | 2*\/ 23 *atan|- -------- + ----------| \ 23 23 / C + -------------------------------------- 23
/ ____ \ / ____ |4*\/ 23 *(-3/4 + x)| | 2*\/ 23 *atan|-------------------| | 1 \ 23 / | -------------- dx = C + ---------------------------------- | 2 23 | 2*x - 3*x + 4 | /
/ ____\ ____ |3*\/ 23 | ____ 2*\/ 23 *atan|--------| pi*\/ 23 \ 23 / --------- + ----------------------- 23 23
=
/ ____\ ____ |3*\/ 23 | ____ 2*\/ 23 *atan|--------| pi*\/ 23 \ 23 / --------- + ----------------------- 23 23
pi*sqrt(23)/23 + 2*sqrt(23)*atan(3*sqrt(23)/23)/23
Estos ejemplos se pueden aplicar para introducción de los límites de integración inferior y superior.