| x−4 | ||
∫ | jak rozbic mianownik? | |
| x3+2x2+4x |
| x−4 | x−4 | A | 2x+2 | C | |||||
= | = | + B* | + | ||||||
| x3+2x2+4x | x(x2+2x+4) | x | x2+2x+4 | x2+2x+4 |
| 1 | ||
B = | ||
| 2 |
| dx | dx | 1 | x+1 | |||||
∫ | = ∫ | = | arctg( | ) + c. | ||||
| x2+2x+4 | (x+1)2+3 | √3 | √3 |
| x−4 | 1 | 2 | x+1 | |||||
∫ | dx = −ln|x| + | ln|x2+2x+4| + | arctg( | ) + c. | ||||
| x3+2x2+4x | 2 | √3 | √3 |