2 / | | 2*x + 3 | --------------- dx | 2 | 4*x + 12*x + 8 | / 1
Integral((2*x + 3)/(4*x^2 + 12*x + 8), (x, 1, 2))
/ | | 2*x + 3 | --------------- dx | 2 | 4*x + 12*x + 8 | /
/ 4*2*x + 12 \ |---------------| | 2 | 2*x + 3 \4*x + 12*x + 8/ --------------- = ----------------- 2 4 4*x + 12*x + 8
/ | | 2*x + 3 | --------------- dx | 2 = | 4*x + 12*x + 8 | /
/ | | 4*2*x + 12 | --------------- dx | 2 | 4*x + 12*x + 8 | / --------------------- 4
/ | | 4*2*x + 12 | --------------- dx | 2 | 4*x + 12*x + 8 | / --------------------- 4
2 u = 4*x + 12*x
/ | | 1 | ----- du | 8 + u | / log(8 + u) ----------- = ---------- 4 4
/ | | 4*2*x + 12 | --------------- dx | 2 | 4*x + 12*x + 8 | / 2 \ / log\2 + x + 3*x/ --------------------- = ----------------- 4 4
/ 2 \ log\2 + x + 3*x/ C + ----------------- 4
/ | / 2 \ | 2*x + 3 log\16 + 8*x + 24*x/ | --------------- dx = C + --------------------- | 2 4 | 4*x + 12*x + 8 | /
log(6) log(12) - ------ + ------- 4 4
=
log(6) log(12) - ------ + ------- 4 4
-log(6)/4 + log(12)/4
Estos ejemplos se pueden aplicar para introducción de los límites de integración inferior y superior.