| 2n | ||
a) an= | ||
| (n−1)! |
| 1 | 1 | 1 | ||||
b) bn= | + | +... | ||||
| 1*2 | 2*3 | n(n+1) |
| 23 | ||
a3 = | ||
| 2 ! |
| 22k −1 | ||
a 2 k − 1 = | ||
| ( 2 k − 2) ! |
| 1 | 1 | 1 | ||||
b) b3 = | + | + | ||||
| 1*2 | 2*3 | 3*4 |
| 1 | 1 | 1 | 1 | |||||
b2 k − 1 = | + | + | + ... + | |||||
| 1*2 | 2*3 | 3*4 | (2k−1)*(2 k) |
| 5^2 | 52 |
| 2^{10} | 210 |
| a_2 | a2 |
| a_{25} | a25 |
| p{2} | √2 |
| p{81} | √81 |
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