Today, students continued to work on sequence and series, geometric sequence and series. Different from arithmetic sequence, geometric sequence has the common ratio. Same as arithmetic sequence and series, geometric sequence and series has the formulas to find the nth term and sum of the terms. Particularly, in geometric series, the infinite geometric series has result as long as the |ratio|<1. This feature can be used to convert repeated decimals to fractions.

Here is the homework for today’s class.

P.604, 21.3.1, 21.3.2, 21.3.4, *21.3.5

P.616, 21.4.1, 21.4.2, 21.4.3, 21.4.4, *21.4.5