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.

The domain of a function is the set of values that we are allowed to plug into our function. So if you are going to check for the domain, usually find for the following 3 points:

The domain is the set of values that get "plugged into" the function (the inputs) while the range is the set of values that the function assumes/produces after "going through the function".

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Now the domain is the set of all x values that if we input it into this function, we're going to get a legitimate output. We're going to get a legitimate f of x.

What is a function? CCSS.Math: 8.F.A.1, HSF.IF.A.1, HSF.IF.A.2 Google Classroom Microsoft Teams About Transcript

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.

Domain and range from graph VA.Math: A.F.1.a, AFDA.AF.2.a VA.Math.2023: A.F.1.a, AFDA.AF.2.a Google Classroom Microsoft Teams

The domain of a function, you'll often hear it combined with domain and range. But the domain of a function is just what values can I put into a function and get a valid output.

And we've already talked a little bit about the notion of a domain. A domain is the set of all of the inputs over which the function is defined. So if this the domain here, if this is the domain here, …