| 1 | 1 | 1 | ||||
oblicz sumę | + | + | wiem że jest jakiś | |||
| √1+√2 | √2+√3 | √3+√4 |
| 1 | 1 | 1 | ||||
schemat tylko nie potrafię go wykorzystać : | = | − | ||||
| n(n+1) | n | n+1 |
| 1 | √1−√2 | ||
= | |||
| √1+√2 | −1 |
| 1 | √2−√3 | ||
= | |||
| √2+√3 | −1 |
| 1 | √3−√4 | ||
= | |||
| √3+√4 | −1 |
| √1−√2 | √2−√3 | √3−√4 | |||
+ | + | = | |||
| −1 | −1 | −1 |
| √1−√4 | 1−2 | |||
= | = | = 1 | ||
| −1 | −1 |