1 / | | 4 + x | ------ dx | 2 | x + 9 | / 0
/ | | 4 + x | 1*------ dx | 2 | x + 9 | /
/ 1*2*x + 0 \ |--------------| /4\ | 2 | |-| 4 + x \1*x + 0*x + 9/ \9/ ------ = ---------------- + -------------- 2 2 2 x + 9 / x \ |- - + 0| + 1 \ 3 /
/ | | 4 + x | 1*------ dx | 2 = | x + 9 | /
/ | / | 1 | 4* | -------------- dx | 1*2*x + 0 | 2 | -------------- dx | / x \ | 2 | |- - + 0| + 1 | 1*x + 0*x + 9 | \ 3 / | | / / -------------------- + ---------------------- 2 9
/ | | 1*2*x + 0 | -------------- dx | 2 | 1*x + 0*x + 9 | / -------------------- 2
2 u = x
/ | | 1 | ----- du | 9 + u | / log(9 + u) ----------- = ---------- 2 2
/ | | 1*2*x + 0 | -------------- dx | 2 | 1*x + 0*x + 9 | / 2\ / log\9 + x / -------------------- = ----------- 2 2
/ | | 1 4* | -------------- dx | 2 | / x \ | |- - + 0| + 1 | \ 3 / | / ---------------------- 9
-x v = --- 3
/ | | 1 4* | ------ dv | 2 | 1 + v | / 4*atan(v) -------------- = --------- 9 9
/ | | 1 4* | -------------- dx | 2 | / x \ | |- - + 0| + 1 | \ 3 / /x\ | 4*atan|-| / \3/ ---------------------- = --------- 9 3
/x\ / 2\ 4*atan|-| log\9 + x / \3/ C + ----------- + --------- 2 3
/ /x\ | / 2\ 4*atan|-| | 4 + x log\9 + x / \3/ | ------ dx = C + ----------- + --------- | 2 2 3 | x + 9 | /
log(10) log(9) 4*atan(1/3) ------- - ------ + ----------- 2 2 3
=
log(10) log(9) 4*atan(1/3) ------- - ------ + ----------- 2 2 3
Данные примеры также можно применять при вводе верхнего и нижнего предела интегрирования.