Sequence & Series

Sequence: lisst 1,2,3

Series: 1+2+3

Finite: ends

Infinite: never ending (…)

explicit formula: for any position

Recursive formula: next term in the pattern

Arithmetic (+-)

Series: pattern with a common difference (d)

Mean: to find the middle term in between do (x+y)/2

Sequence: sum of the terms

Geometric

Series: with a common ratio

Finite: 2 equations one know n one no know n

Infinite:

If |r| <1 = converges (smaller)

If |r|>1 series diverges NO sum DNE

Sequence: common ratio

EXPLICIT, RECURRSIVE

Mean: Average set of products square root of x*y CAN BE ±