Implied Domain

Sick of ads?​ Sign up for MathVids Premium
Taught by mrbrianmclogan
  • Currently 4.0/5 Stars.
5893 views | 1 rating
Part of video series
Meets NCTM Standards:
Lesson Summary:

This lesson is about finding the implied domain of a rational function with a radical. To determine the domain of a graph, we look for values that are not allowed, such as dividing by zero or taking the square root of a negative number. By setting the bottom equal to zero and setting the root greater than or equal to zero, we can solve for the values that are not part of the domain. In this case, the domain is all values greater than negative six, as x cannot equal negative six or any other value that makes the bottom equal to zero.

Lesson Description:

Finding the implied domain of a rational function with a radical

I show how to solve math problems online during live instruction in class. This is my way of providing free tutoring for the students in my class and for students anywhere in the world. Every video is a short clip that shows exactly how to solve math problems step by step. The problems are done in real time and in front of a regular classroom. These videos are intended to help you learn how to solve math problems, review how to solve a math problems, study for a test, or finish your homework. I post all of my videos on YouTube, but if you are looking for other ways to interact with me and my videos you can follow me on the following pages through My Blog, Twitter, or Facebook.

Questions answered by this video:
  • What is the domain in a function h(x)?
  • Name two restrictions on the variable of a rational function with a radical.
  • What must we remember to list after simplifying rational expressions ?
  • Determine the domain if given x≠ -6 and x ≥ -6
  • Staff Review

    • Currently 4.0/5 Stars.
    Good presentation. Speaking a little slower may be more helpful.