10.4 Geometric Series

Geometric Series

A geometric series is the sum of a finite number of terms in a geometric sequence. Just like the arithmetic series, we also have geometric series formulas to help us with that.


• the sum of n terms of a geometric series:
sn=t1(rn1)r1{s_n} = \frac{{{t_1}\;\left( {{r^n} - 1} \right)}}{{r - 1}}
=rtnt1r1=\frac{r \cdot t_{n}-t_{1}}{r-1}
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Geometric series

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