How To Get The Sum Of Geometric Sequence

How to get the sum of geometric sequence

 

To get the sum of geometric sequence you need to use this formula:

S_{n} =\frac{a_{1}(1-r^{n} ) }{1-r}

Where:

S_{n} is the sum of geometric sequence

r is the common ratio (common ratio must not be equal to 1)

a_{1} is the first term

n is the number of terms


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