
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.
How to find domain and range from a graph (video) | Khan Academy
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:
Examples finding the domain of functions - Khan Academy
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.
Determining whether values are in domain of function
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".
What is a function? (video) | Domain & range | Khan Academy
Functions assign a single output for each of their inputs. In this video, we see examples of various kinds of functions.
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 …
Domain and range from graph (practice) | Khan Academy
Given the graph of a function, determine its domain or range.
Domain of advanced functions (video) | Khan Academy
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.
Sequences and domain (video) | Sequences | Khan Academy
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 …
Determine the domain of functions (practice) | Khan Academy
Determine the domain of a function according to the algebraic limitations of that function.