Mathematics 73 Online
OpenStudy (anonymous):

Find the 3rd term of the arithmetic series described as : a{1} =102, a{n}= 57 and S{n}=795?

OpenStudy (anonymous):

I'm not sure what you mean by a{n} = 57

OpenStudy (anonymous):

Are you saying the series converges to 57? And that the sum converges to 795?

OpenStudy (anonymous):

oh, one sec.. gotta refresh my coffee

OpenStudy (anonymous):

like A of n The "n" is below the A

OpenStudy (anonymous):

Yes I get that, but how can you say the n'th term of the series is 57. For what value of n?

OpenStudy (anonymous):

S{n} =795

OpenStudy (anonymous):

That's the sum of the first n terms, but again, what is n?

OpenStudy (anonymous):

I have no clue!

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