Day 3: Section 9.4 Series
College Algebra 201 and 202 - Summer 2026
MTH 122 · COLLEGE ALGEBRA · DAY 3
Section 9.4 Series
✅ To-Do This Day
- Watch the Day 3 videos below
- Submit HW 3 Section 9.4: Series — ⏰ Due Monday, June 15th 11:59pm
🎯 Learning Objectives (click to expand)
- Use summation notation (Sigma notation)
- Use the formula for the sum of the first n terms of an arithmetic series.
- Use the formula for the sum of the first n terms of a geometric series.
- Use the formula for the sum of an infinite geometric series.
📝 Guided Notes
Print or open digitally and fill in as you watch the videos.
🎬 Day 3 Videos
Watch the videos below.
1. Partial Sums and Series
2. Partial Sums Of Arithmetic Sequences
3. Partial Sums/Series of Geometric Sequences
📚 Required Reading
✅ Completed Notes (Reference)
A worked-through copy of the guided notes — use after you've tried the videos to check your understanding.