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Mathematics 12 Online
OpenStudy (anonymous):

What is the formula of finding the sum of all terms in a sequence?

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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