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.

Finding the domain and the range of a function that is given graphically. Created by Sal Khan.

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 …

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.

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".

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.

I want to ask, is it a function that is important? What I mean is that even if an equation does not satisfy the definition of a function, we can still get its results. Is there any special reason why …

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 …

The domain is the possible numbers n can be that would accurately describe the sequence. For example, the difference between whether n>=1 or n>=0 depends on whether the range …

Learn about the domain and range of a function, including how to determine them and their significance in mathematics.