Find the partial sum Sn of the arithmetic sequence that satisfies the given conditions.a = −2, d = 22, n = 26S26 =
Question
Solution 1
The formula for the sum Sn of the first n terms of an arithmetic sequence is given by:
Sn = n/2 * (a1 + an)
where: n = number of terms a1 = first term an = nth term
In this case, we have a1 = -2 (the first term), d = 22 (the common difference), and n = 26 (the number of terms).
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