1 | 1 | 1 | 1 | |||||
an = | − | + | − ... + (−1)n + 1 * ( | )n dla n ≥ 1, to granica | ||||
3 | 9 | 27 | 3 |
1 | 1 | |||
No tak tak, ale dobrze myśle, że q = − | a1 = | , i ilość wyrazów to n? Czy trzeba | ||
3 | 3 |
1 | 1−(−1/3)n | 1−(−1/3)n | ||||
an= | * | = | → 1/4 | |||
3 | 1−(−1/3) | 4 |
1 | 1 | |||
(− | )∞ dąży do 0 więc mamy | , si? | ||
3 | 4 |