Questions and Answers
What is the general formula for finding the nth term in an arithmetic sequence?
$T_n = a+(n-1)d$
What is the general formula for finding the sum of the first n terms in an arithmetic sequence?
$S_n = n(2a+(n-1)d)$
What defines a geometric sequence?
Each term is found by multiplying the preceding term by a fixed number.
What is the formula for finding the nth term in a geometric sequence?
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What is the formula for finding the sum of the first n terms in a geometric sequence?
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Under what condition does an infinite geometric series exist?
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