At the 1:50 mark, he finds the domain by finding when the radical expression is greater than or equal to zero. He should have found when the expression UNDER the radical is greater than equal to zero. He still ended up with the correct domain.
This lesson covers how to find the quotient and domain of two functions. By dividing f(x) by g(x) and simplifying, we can find the quotient. To determine the domain, we need to identify any values of x that result in division by zero or negative numbers under a root. We solve for these values and find that the domain is x is less than or equal to 1.
Finding the quotient and domain of two functions
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.