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 …

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.

Learn about the domain and range of a function on Khan Academy.

Domain of rational expressions The domain of any expression is the set of all possible input values. In the case of rational expressions, we can input any value except for those that make …

Let's take a look at an example where plotting a graph can help us figure out the domain and range of a function. Even if that function is not a polynomial. We break down the definition of …

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

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, and I take a value here, and I put that in for x, then the function …

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So what I'm saying is, look, if I take my domain, there must be some subset of vectors right here, where if I take any member of this set, it will map into these guys, and that's what I'm defining …