If Sn = n^2 + 3n, determine an expression for tn.
How do I find tn? I know my formulas for finding the sum, but I don't know how to find tn.
Do I use the formulas for arithmetic or geometric? Thanks for some guidance.
Last edited by mneox; Dec 7th 2009 at 11:02 PM.
Follow Math Help Forum on Facebook and Google+
Can you continue?
View Tag Cloud