How to find the domain of a function (video) | Khan Academy
The domain of a function is the set of all possible inputs for the function. For example, the domain of f (x)=x² is all real numbers, and the domain of g (x)=1/x is all real numbers except for x=0.
Examples finding the domain of functions - Khan Academy
Video transcript - [Instructor] In this video, we're gonna do a few examples finding domains of functions. So let's say that we have the function f of x is equal to x plus five over x minus two. …
How to find domain and range from a graph (video) | Khan Academy
Finding the domain and the range of a function that is given graphically. Created by Sal Khan.
Determining whether values are in domain of function
Sal shows how to test whether or not a value is or isn't in the domain of a function.
Intro to rational expressions (article) | Khan Academy
What you will learn in this lesson This lesson will introduce you to rational expressions. You will learn how to determine when a rational expression is undefined and how to find its domain.
Rational functions (video) - Khan Academy
What are rational functions? How do we plot them? What is their domain and range? Let's find out. We break down the definition of the function given in set-builder form and plot the graph …
Worked example: domain of algebraic functions - Khan Academy
The domain needs to be restricted to avoid any input (X-value) that would cause the denominator to be = 0. We do this by looking at each factor in the denominator and finding the value that …
Determine the domain of functions (practice) | Khan Academy
Determine the domain of a function according to the algebraic limitations of that function.
Domain of advanced functions (video) | Khan Academy
Sal covers many different kinds of functions and shows how to determine their domain.
Domain and range of quadratic functions (video) | Khan Academy
How do you find the domain and range of a piece-wise function using interval notation?