Formula
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n
number of elements
Sn
arithmetic series, sum of n elements
a1
initial term
an
n-th term
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Number of terms of arithmetic progression or arithmetic sequence (given terms,arithmetic series)
Formula description
In mathematics, an arithmetic progression (AP) or arithmetic sequence is a sequence of numbers such that the difference of any two successive members of the sequence is a constant. The sum of the members of a finite arithmetic progression is called an arithmetic series.
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Sn
a1
an
n
Precision
Formula code
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