1 / | | a*x + b | ---------------- dx | 2 | a*x + 2*b*x + c | / 0
Integral((a*x + b)/(a*x^2 + (2*b)*x + c), (x, 0, 1))
/ | | a*x + b | ---------------- dx | 2 | a*x + 2*b*x + c | /
/ 0 \ |------------| / 2*a*x + 2*b \ |/ 2 \| |----------------| ||- b + a*c|| | 2 | ||----------|| a*x + b \a*x + 2*b*x + c/ \\ a // ---------------- = ------------------ + --------------------------------------------------- 2 2 2 a*x + 2*b*x + c / ____________ ____________\ | / 1 / 1 | |-a* / ---------- *x - b* / ---------- | + 1 | / 2 / 2 | \ \/ - b + a*c \/ - b + a*c /
/ | | a*x + b | ---------------- dx | 2 = | a*x + 2*b*x + c | /
/ | | 2*a*x + 2*b | ---------------- dx | 2 | a*x + 2*b*x + c | / ---------------------- 2
/ | | 2*a*x + 2*b | ---------------- dx | 2 | a*x + 2*b*x + c | / ---------------------- 2
2 u = a*x + 2*b*x
/ | | 1 | ----- du | c + u | / log(c + u) ----------- = ---------- 2 2
/ | | 2*a*x + 2*b | ---------------- dx | 2 | a*x + 2*b*x + c | / 2 \ / log\c + a*x + 2*b*x/ ---------------------- = --------------------- 2 2
0
____________ ____________ / 1 / 1 v = - b* / ---------- - a*x* / ---------- / 2 / 2 \/ - b + a*c \/ - b + a*c
True
True
/ 2 \ log\c + a*x + 2*b*x/ C + --------------------- 2
/ | / 2 \ | a*x + b log\a*x + 2*b*x + c/ | ---------------- dx = C + --------------------- | 2 2 | a*x + 2*b*x + c | /
log(a + c + 2*b) log(c) ---------------- - ------ 2 2
=
log(a + c + 2*b) log(c) ---------------- - ------ 2 2
log(a + c + 2*b)/2 - log(c)/2
Estos ejemplos se pueden aplicar para introducción de los límites de integración inferior y superior.