Arithmetic and Geometric Sequences - Purplemath The two simplest sequences to work with are arithmetic and geometric sequences. An arithmetic sequence goes from one term to the next by always adding (or ...
Arithmetic and Geometric sequences An arithmetic sequence is a sequence with the difference between two consecutive terms constant. The difference is called the common difference.
等差数列与等比数列 2010年8月27日 ... （1）等比数列的通项公式： 或 ；. （2）等比数列的前 项和公式： ；. （3）等比中项： ；. （4） 无穷递缩等比数列各项 ...
数列公式_百度百科 这个常数叫做等比数列的公比，公比通常用字母q表示。如果一个数列从第二项起，每一项与它的前一项的差等于同一个常数，这个数列就叫做等差数列，而这个常数 ...
