| Partial Fraction Expansion | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 0 | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| 1 | 1 | ||||||||
| 2 | 1 | -1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 3 | 2 | -1 | 2 | 0 | 0 | 0 | 0 | 0 | 0 |
| 4 | 6 | -2 | 2 | -6 | 0 | 0 | 0 | 0 | 0 |
| 5 | 24 | -6 | 4 | -6 | 24 | 0 | 0 | 0 | 0 |
| 6 | 120 | -24 | 12 | -12 | 24 | -120 | 0 | 0 | 0 |
| 7 | 720 | -120 | 48 | -36 | 48 | -120 | 720 | 0 | 0 |
| 8 | 5040 | -720 | 240 | -144 | 144 | -240 | 720 | -5040 | 0 |
| 9 | 40320 | -5040 | 1440 | -720 | 576 | -720 | 1440 | -5040 | 40320 |

A Rational Function P(x)/Q(x) can
be rewritten using what is known as partial fraction decomposition. This
procedure often allows integration to be performed on each term separately
by inspection. For each factor of Q(x) the form
, introduce terms
For each factor of the form
, introduce terms
Then write
and solve for the
s and
s.
References
Beyer, W. H. CRC Standard Mathematical Tables, 28th ed. Boca Raton, FL: CRC Press, pp. 13-15, 1987.