1 / | | 4*x - 1 | ------------- dx | 2 | x - 8*x + 41 | / 0
/ | | 4*x - 1 | 1*------------- dx | 2 | x - 8*x + 41 | /
/15\ |--| 4*x - 1 1*2*x - 8 \25/ ------------- = 2*--------------- + -------------- 2 2 2 x - 8*x + 41 1*x - 8*x + 41 / x 4\ |- - + -| + 1 \ 5 5/
/ | | 4*x - 1 | 1*------------- dx | 2 = | x - 8*x + 41 | /
/ | | 1 3* | -------------- dx | 2 | / x 4\ | |- - + -| + 1 / | \ 5 5/ | | | 1*2*x - 8 / 2* | --------------- dx + ---------------------- | 2 5 | 1*x - 8*x + 41 | /
/ | | 1*2*x - 8 2* | --------------- dx | 2 | 1*x - 8*x + 41 | /
2 u = x - 8*x
/ | | 1 2* | ------ du = 2*log(41 + u) | 41 + u | /
/ | | 1*2*x - 8 / 2 \ 2* | --------------- dx = 2*log\41 + x - 8*x/ | 2 | 1*x - 8*x + 41 | /
/ | | 1 3* | -------------- dx | 2 | / x 4\ | |- - + -| + 1 | \ 5 5/ | / ---------------------- 5
4 x v = - - - 5 5
/ | | 1 3* | ------ dv | 2 | 1 + v | / 3*atan(v) -------------- = --------- 5 5
/ | | 1 3* | -------------- dx | 2 | / x 4\ | |- - + -| + 1 | \ 5 5/ | / / 4 x\ ---------------------- = 3*atan|- - + -| 5 \ 5 5/
/ 2 \ / 4 x\ C + 2*log\41 + x - 8*x/ + 3*atan|- - + -| \ 5 5/
/ | | 4*x - 1 / 2 \ / 4 x\ | ------------- dx = C + 2*log\41 + x - 8*x/ + 3*atan|- - + -| | 2 \ 5 5/ | x - 8*x + 41 | /
-3*atan(3/5) - 2*log(41) + 2*log(34) + 3*atan(4/5)
=
-3*atan(3/5) - 2*log(41) + 2*log(34) + 3*atan(4/5)
Данные примеры также можно применять при вводе верхнего и нижнего предела интегрирования.