A function is a set of mathematical operations performed on one or more inputs (variables) that results in an output. For now, functions will take one or more real numbers as an input, and return a numerical output. In more advanced classes you'll learn about far more complex functions! However, a simple function might return the input plus one.

Stoneybrook mobile home park seabrook nhSet-Builder Notation. A shorthand used to write sets, often sets with an infinite number of elements.. Note: The set {x : x > 0} is read aloud, "the set of all x such that x is greater than 0."

1.6 - Combinations of Functions Arithmetic Combinations of Functions. The sum, difference, product, or quotient of functions can be found easily. Sum (f + g)(x) = f(x) + g(x) Difference (f - g)(x) = f(x) - g(x) Product (f · g)(x) = f(x) · g(x) Quotient (f / g)(x) = f(x) / g(x), as long as g(x) isn't zero.