👉 Learn how to find the value that makes a function continuous. A function is said to be continuous if two conditions are met. They are: the limit of the function exists and that the value of the ...

👉 Learn how to evaluate a piecewise function. A piecewise function is a function which uses different rules for different intervals. When evaluating a piecewise function, pay attention to the ...

Expressions are a useful tool, however they can become confusing as the variables all are global. Changing x changes the value of any expression involving x. This is not usually how we want things to ...