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The general term of a geometric sequence

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The n-th term of a geometric sequence with initial value a and common ratio r is given by

a_n = a_1¡¿r^(n-1)

a_1:start value
r  :common ratio (¡Á0)

*** Âü°í¹®Çå[References] ***

https://en.m.wikipedia.org/wiki/Geometric_progression
a_n = a_1¡¿r^(n-1)
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