This video explains how to derive the formula that gives you the sum of an arithmetic series. This video also explains the difference between an arithmetic sequence and an arithmetic series as well as identifying the common difference between terms.
Sequences - Free Formula Sheet:
https://www.video-tutor.net/precalculus-formula-sheets.html
Sequences and Series:
https://www.video-tutor.net/sequences.html
Final Exam and Test Prep Videos:
https://bit.ly/41WNmI9
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