Thursday, February 20, 2014
9.2 Arithmetic Sequences
This chapter focused on arithmetic sequences and how to find the sum of a sequence. This problem combines finding the arithmetic equation for a series and finding the sum of said series. In this problem, we are trying to find the sum of a set of 25 numbers. First, we must find the common difference to complete the equation for the arithmetic sequence equation shown below. Then, we can find a25 using that equation. Finally, we plug in a1, a25, and n (which is 25) into the sum of an arithmetic sequence equation shown at the bottom, and we get 1850 as the answer!
Subscribe to:
Post Comments (Atom)
good job Joe. your example really helped me
ReplyDeleteHey Joe! Thanks for the extremely clear and helpful example! I mean some of the numbers I can't really read (:D)! But no worries!
ReplyDelete