Day: February 12, 2018

Pre Calc 11- Week 2

jacobs2015 on

In math this week I learned how to find the common difference of an arithmetic sequence when the terms do not come one after the other. Usually, it is easy to find a common difference when you have for ex. t_{1} and t_{2} for that all you do is t_{2}-latex t_{1}, then you have the common difference for the sequence. But when you are given t_{1} and t_{8}, it’s not as easy as subtracting them. To find the difference for this sequence you need to plug t_{1} into the equation, then you add however many differences there is between t_{1} and t_{8}. In this case, there’s 7 differences so you need to add 7d onto t_{1}. It should look like t_{1}+7d. Then you solve for d.