1 / | | 1 | ---------- dx | 2 | x - x + 1 | / 0
Integral(1/(x^2 - x + 1), (x, 0, 1))
/ | | 1 | ---------- dx | 2 | x - x + 1 | /
1 1 ---------- = ------------------------------- 2 / 2 \ x - x + 1 |/ ___ ___\ | ||-2*\/ 3 \/ 3 | | 3/4*||--------*x + -----| + 1| \\ 3 3 / /
/ | | 1 | ---------- dx | 2 = | x - x + 1 | /
/ | | 1 4* | ------------------------- dx | 2 | / ___ ___\ | |-2*\/ 3 \/ 3 | | |--------*x + -----| + 1 | \ 3 3 / | / --------------------------------- 3
/ | | 1 4* | ------------------------- dx | 2 | / ___ ___\ | |-2*\/ 3 \/ 3 | | |--------*x + -----| + 1 | \ 3 3 / | / --------------------------------- 3
___ ___ \/ 3 2*x*\/ 3 v = ----- - --------- 3 3
/ | | 1 4* | ------ dv | 2 | 1 + v | / 4*atan(v) -------------- = --------- 3 3
/ | | 1 4* | ------------------------- dx | 2 | / ___ ___\ | |-2*\/ 3 \/ 3 | | |--------*x + -----| + 1 / ___ ___\ | \ 3 3 / ___ | \/ 3 2*x*\/ 3 | | 2*\/ 3 *atan|- ----- + ---------| / \ 3 3 / --------------------------------- = --------------------------------- 3 3
/ ___ ___\ ___ | \/ 3 2*x*\/ 3 | 2*\/ 3 *atan|- ----- + ---------| \ 3 3 / C + --------------------------------- 3
/ ___ \ / ___ |2*\/ 3 *(-1/2 + x)| | 2*\/ 3 *atan|------------------| | 1 \ 3 / | ---------- dx = C + -------------------------------- | 2 3 | x - x + 1 | /
___ 2*pi*\/ 3 ---------- 9
=
___ 2*pi*\/ 3 ---------- 9
2*pi*sqrt(3)/9
Estos ejemplos se pueden aplicar para introducción de los límites de integración inferior y superior.