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OpenStudy (anonymous):
What is the formula of finding the sum of all terms in a sequence?
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OpenStudy (lgbasallote):
in arithmetic sequence it's \[\large S_n = \frac{n(a_n + a_1)}{2}\]
OpenStudy (lgbasallote):
do you need geometric?
OpenStudy (anonymous):
Arithmetic :)
OpenStudy (lgbasallote):
Sn means sum of terms n is the number of terms a1 is first term an is last term
OpenStudy (lgbasallote):
so i guess you're good to go now?
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