# The Domain and Range of a Square Root Function f(x)=2sqrt(6-3x)+1

This video explains how to determine the domain and range of a square root function.

# Introduction to Functions of Two Variables with Applications

This lesson introduces and defines functions of two variables.

# Practical Domain and Practical Range (L9.5)

This lesson explains and provides an example of practical domain and practical range.

# Introduction to Domain and Range (L9.4)

This lesson explains how to determine the domain and range of function given as ordered pairs and from the graph of a function.

# Ex: Find the Practical Domain of a Profit Function (Linear)

This video explains how to determine the practical domain and practical range of a linear profit function.

# The Floor Function (Greatest Integer Function)

This video defines the floor function or greatest integer function and then graph a function by hand.

# Ex: Evaluate Basic Inverse Trig Expressions Involving Arccosine Using the Unit Circle

This video explains how to evaluate inverse trig expressions involving arccosine using the unit circle.  Answers are checked on a graphing calculator.