<p>Taking math2c tomorrow (may 7) but I don't know how to solve a sequence/series on my TI-89. Need help.</p>
<p>I need more examples of exactly what you want to do. It's rather difficult to diagnose a problem when given in such broad terms.</p>
<p>Like ex. </p>
<p>Find the 28th term of the arithmetic sequence 2,5,8,......</p>
<p>You should honestly be able to do by hand, since I have no idea how to input that on a calculator... </p>
<p>Use the formula
An = A1 + (n - 1) d</p>
<p>An = term you want (28th)
A1 = a "starting term", usually the first term (2)
(N - 1) = Term # desired minus the "starting term" (28 - 1)
d = common difference between each term (3 in the example)</p>
<p>yah....I know, I already inputed the formulas in the calculator. So I'm covered.</p>
<p>Thanks anyway !! =)</p>