A piecewise function is a function built from pieces of different functions over different intervals. For example, we can make a piecewise function f(x) where f(x) = -9 when -9 < x ≤ -5, f(x) = 6 when -5 < x ≤ -1, and f(x) = -7 when -1 <x ≤ 9.

What is a condition in a piecewise function?

Functions that use conditions are called piecewise functions, because each condition defines a separate piece of the function. ... Without conditionals, you could only write a function that always moves the player up, or always moves it down, but not both.

How do you read a piecewise function?

Once we have a given piecewise-defined function, we can interpret it by looking at the given intervals. If we take a look at our example, we can read it as: When x > 0, f(x) is equal to 2x. When x = 0, f(x) is equal to 1.