General Forms of a Sequence

General Forms of Sequence

 

 

 

Geometric Sequence- has a common ratio

ex. an = a1 x rn-1 -----> 3 , 6 , 12 , ___ ---> a4 = 3 x 23

a4 = 24

Arithmatic                      
an = a1 (n-1) d

*ex. 1, 3, 5, 7, 9    ( increasing 2)

Geometric
an = a1 x rn-1

*ex. -9, 3, -1. 1/3. -1/9 (multipying by -1/3)

subscripts

exponents