3n n! | ||
an = | ||
(3n)! |
3n*n! | 3n | an+1 | ||||
an = | = | ... i teraz licz: | ||||
3n!*3n! | 9n! | an |
an+1 | 3n+1*(n+1)! | (3n)! | |||
= | * | = | |||
an | (3n+3)! | 3n*n! |
3*3n*(n+1)n! | (3n)! | |||
= | * | = | ||
(3n)!*(3n+1)(3n+2)(3n+3) | 3n*n! |
3(n+1) | 1 | |||
= | = | ciąg malejący | ||
(3n+1)(3n+2)(3n+3) | (3n+1)(3n+2) |
5^2 | 52 |
2^{10} | 210 |
a_2 | a2 |
a_{25} | a25 |
p{2} | √2 |
p{81} | √81 |
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