13-1 Review

This week I am going to review with you all the information that we learned in chapter 13, section 1. In chapter 13, section 1, we learned about arithmetic and geometric sequences. In this section, we just learned the basics of geometric and arithmetic sequences. Here are the notes.

Notes:
• An arithmetic sequence is a sequence that is generated by adding the same number each time.
• The formula for an arithmetic sequence is as follows: tn = t1 + (n – 1) d
• A geometric sequence is a sequence that is generated by multiplying the same number each time.
• The formula for a geometric sequence is as follows: tn = t1 * r^(n – 1)
• n = number of terms
• tn = term number
• t1 = term 1
• d = what is added
• r = what is multiplied

Example: Identify the following as an arithmetic or geometric, and find the formula for the nth term: 3, 6, 9, 12, ……
• this is an arithmetic sequence
• tn = 3 + (n-1) 3
• tn = 3 + 3n-3
• tn = 3n




-Braxton-