3 | ||
an = − | n + 7 | |
4 |
3 | ||
a) a1 = − | *1 + 7 = ... | |
4 |
3 | ||
b) − | n + 7 = 30 | |
4 |
3 | 4 | |||
− | n = 23 / *(− | |||
4 | 3 |
23*4 | ||
n = − | ∉ ℕ1 | |
3 |
3 | ||
c) − | n + 7 > 0 | |
4 |
3 | 4 | |||
− | n > − 7 / *( − | ) | ||
4 | 3 |
28 | ||
n < | ||
3 |
3 | ||
d) − | n + 7 = 0 | |
4 |
5^2 | 52 |
2^{10} | 210 |
a_2 | a2 |
a_{25} | a25 |
p{2} | √2 |
p{81} | √81 |
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