Precalculus Vocabulary

2. a field of math using iteration to make shapes
3. a triangular array of numbers in which those at the ends of the rows are 1 and each of the others are the sum of the nearest two numbers in the row above
5. the average of a set of numbers, found by adding all the values and then dividing them by the amount of values added
6. the sum of an arithmetic sequence
8. this can be a signed number, a variable, or a constant multiplied by a variable or variables
9. in a geometric sequence, found by dividing the second term by the term before it
12. a way of proving a statement for natural numbers
13. a test based on if each term of one series is smaller than another, then the sum of that series must be smaller
14. a number series in which each number is the sum of the two numbers before it (1,2,3,5,8..)
15. a series of numbers where each term can be found by multiplying a constant
17. a series derived from the development of exponential expressions
18. a way to present a series in a simpler form
19. a test for the convergence of a series where each term is a real or complex number
20. a series of numbers which follow a particular pattern

1. a way to expand a binomial expression that has been raised to a high power
4. the difference of the numbers in an arithmetic sequence
7. a line of numbers where the difference between each number is constant
10. a series where a limit does not exist
11. the average of a geometric sequence found by using the product of the numbers
16. the value that a function or sequence "approaches" as the input approaches some value