| 1 | ||
∑n=0∞xn = | ||
| 1−x |
| d | d | 1 | |||
(∑n=0∞xn) = | ( | ) | |||
| dx | dx | 1−x |
| 1 | ||
∑n=0∞nxn−1 = − | (−1) | |
| (1−x)2 |
| 1 | ||
∑n=1∞nxn−1 = | ||
| (1−x)2 |
| 1 | ||
∑n=0∞(n+1)xn = | ||
| (1−x)2 |
| d | d | 1 | |||
(∑n=0∞(n+1)xn)= | ( | ) | |||
| dx | dx | (1−x)2 |
| −2 | ||
∑n=0∞n(n+1)xn−1 = | (−1) | |
| (1−x)3 |
| 2 | ||
∑n=1∞n(n+1)xn−1 = | ||
| (1−x)3 |
| 2 | ||
∑n=0∞(n+1)(n+2)xn = | ||
| (1−x)3 |
| 5^2 | 52 |
| 2^{10} | 210 |
| a_2 | a2 |
| a_{25} | a25 |
| p{2} | √2 |
| p{81} | √81 |
| Kliknij po więcej przykładów | |
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| Twój nick | |