等差數列 | Arithmetic Sequence

影片內容：

00:35 – 重溫數列 | review of sequence
03:41 – 等差數列的概念與通項 | concept and general term of arithmetic sequence
07:40 – 等差數列的性質 | properties of arithmetic sequence
10:55 – 例子 1 | example 1
11:39 – 例子 2 | example 2
12:37 – 例子 3 | example 3
13:20 – 例子 4 | example 4