## Definitions: 'Functional' Words!

- Term (as it relates to a sequence)- the values in the range of a sequence

__(The individual y values are__

*terms*)- Arithmetic sequence- a sequence made by
__adding__the same value each time to get the next term

- Geometric sequence- a sequence where each term after the 1st is found by
__multiplying__the previous term by a fixed non-zero number

- Function- an equation where all inputs have
*exactly one*output

- Domain- all of the x values in a function; all of the inputs

- Range- all of the y values in a function; all of the outputs

- Recursive formula- a formula used to find a term using one or more of the previous terms

t(n)= tn-1 + 2

- Explicit formula- a formula used to find the value of a term directly, without having to know any of the previous terms

**=**4n+2

- Odd function- a function where f(-x) = -f(x)

- Even function- a function where f(x) = f(-x)