Addition of functions

Sick of ads?​ Sign up for MathVids Premium
Taught by mrbrianmclogan
  • Currently 4.0/5 Stars.
6279 views | 1 rating
Part of video series
Meets NCTM Standards:
Lesson Summary:

In this lesson, you will learn how to add two functions together and evaluate them for a given term. By combining the two functions and then plugging in the term, you can easily evaluate the addition of the two functions. This is a useful skill to have in mathematics and can be applied in a variety of situations.

Lesson Description:

How to evaluate the addition 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.

Questions answered by this video:
  • How do you add two functions?
  • How do you evaluate the addition of two functions at a value?
  • If f(x) = x^2 + 1 and g(x) = x - 1, what is (f + g)(t - 2)?
  • How do you find (f + g)(x)?
  • Staff Review

    • Currently 4.0/5 Stars.
    This lesson shows you how to add two functions and evaluate the resulting function at a value. First, the functions are added together. Then, a variable expression is substituted for x in the resulting function. All parts of this solution are explained as they are solved.