1 / | | x - 1 | ------ dx | 2 | x + 4 | / 0
/ | | x - 1 | 1*------ dx | 2 | x + 4 | /
/ 1*2*x + 0 \ |--------------| /-1 \ | 2 | |---| x - 1 \1*x + 0*x + 4/ \ 4 / ------ = ---------------- + -------------- 2 2 2 x + 4 / x \ |- - + 0| + 1 \ 2 /
/ | | x - 1 | 1*------ dx | 2 = | x + 4 | /
/ | / | 1 | | -------------- dx | 1*2*x + 0 | 2 | -------------- dx | / x \ | 2 | |- - + 0| + 1 | 1*x + 0*x + 4 | \ 2 / | | / / -------------------- - -------------------- 2 4
/ | | 1*2*x + 0 | -------------- dx | 2 | 1*x + 0*x + 4 | / -------------------- 2
2 u = x
/ | | 1 | ----- du | 4 + u | / log(4 + u) ----------- = ---------- 2 2
/ | | 1*2*x + 0 | -------------- dx | 2 | 1*x + 0*x + 4 | / 2\ / log\4 + x / -------------------- = ----------- 2 2
/ | | 1 - | -------------- dx | 2 | / x \ | |- - + 0| + 1 | \ 2 / | / ---------------------- 4
-x v = --- 2
/ | | 1 - | ------ dv | 2 | 1 + v | / -atan(v) -------------- = --------- 4 4
/ | | 1 - | -------------- dx | 2 | / x \ | |- - + 0| + 1 | \ 2 / /x\ | -atan|-| / \2/ ---------------------- = --------- 4 2
/x\ / 2\ atan|-| log\4 + x / \2/ C + ----------- - ------- 2 2
/ /x\ | / 2\ atan|-| | x - 1 log\4 + x / \2/ | ------ dx = C + ----------- - ------- | 2 2 2 | x + 4 | /
log(5) atan(1/2) log(4) ------ - --------- - ------ 2 2 2
=
log(5) atan(1/2) log(4) ------ - --------- - ------ 2 2 2
Данные примеры также можно применять при вводе верхнего и нижнего предела интегрирования.