http://iv.pl/images/08172803430567790394.png
| 1 | 1 | 1 | ||||
log3 | + log3 | + ... + log3 | = | |||
| 3 | 9 | 3n |
| n*( n + 1) | ||
= − 1 − 2 − ... − n = − ( 1 + 2 + ... + n) = − | ||
| 2 |
| 1 | ||
log 3 | = log3 3−1 = − 1 log3 3 = − 1 *1 = − 1 | |
| 3 |
| 1 | ||
log3 | = log3 3−2 = − 2 log3 3 = − 2 * 1 = − 2 | |
| 9 |
| 1 | ||
log3 | = log3 3−n = − n log3 3= − n *1 = − n | |
| 3n |