Review

I hope this will help everyone who forgot their books...

An arithmetic sequence is the difference (as in subtracting), between any two consecutive terms, and it's a constant.

A geometric sequence is the ratio (multiplication) of any two consecutive terms, and it's a constant.

A recursive definition of a sequence gives the FIRST TERM and then a RULE for getting the nth term form the previous term(s).


Finding the nth term of a:
Geometric sequence-> Tn= T1 x r^(n-1)
Arithmetic sequence-> Tn= T1 + (n-1) d