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