INSTRUCTORS Carleen Eaton Grant Fraser

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### Geometric Sequences

• You can use the formula for the nth term of a series to find the first term.

• If you need to find a particular term and you are given the kth term, first use the kth term to find the first term. Then use the first term to find the term you are asked to find.

• When finding geometric means, remember that you might get two different values of r, one positive and the other negative. Use both values to obtain two different sets of geometric means. Each set is a solution to the problem.

### Geometric Sequences

Lecture Slides are screen-captured images of important points in the lecture. Students can download and print out these lecture slide images to do practice problems as well as take notes while watching the lecture.

• Intro 0:00
• What are Geometric Sequences? 0:20
• Common Ratio
• Example
• nth Term of a Geometric Sequence 3:39
• Geometric Means 4:16
• Example: Missing Term
• Lecture Example 1 8:09
• Lecture Example 2 11:42