Here is the formula:
Wednesday, February 19, 2014
Sum Formula
Today in Mathland we learned about the Sum Formula for arithmetic sequences. Now sequences can get very complicated pretty quick. But as long as you stick to the basics you should be fine. Make sure you keep track of your variable "n" and don't mix up Sn and An. So, stick to the basics, and they will work wonders for you!
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Thanks for showing the sum formula. It is easy to get confused when to use An and Sn. For Sn it is easy to get the problem wrong if your n is not correct. To find n is not as easy it seems to be especially when it comes in summation formation. Thanks again for the reminder about the sum formula.
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