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 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 would make …

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".

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.

We break down the definition of the function given in set-builder form and plot the graph by connecting points on the cartesian plane. Domain and Range is calculated through visually observing the graph.

What is going to be the domain of this function? Pause this video and try to figure that out. All right, now let's do it together. Now the domain is the set of all x values that if we input it into this function, we're …

But it doesn't hurt to introduce function notations because it makes it very clear that the function takes an input, takes my x-- in this definition it munches on it.

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