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  1. 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.

  2. Examples finding the domain of functions - Khan Academy

    Let's do one last example. Let's say we're told that h of x is equal to x minus five squared. What's the domain here? So let me write this down. The domain is all real values of x. Now are we …

  3. What is a function? (video) | Domain & range | Khan Academy

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

  4. How to find domain and range from a graph (video) | Khan Academy

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

  5. Rational functions (video) - Khan Academy

    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 …

  6. Determine the domain of functions (practice) | Khan Academy

    Determine the domain of a function according to the algebraic limitations of that function.

  7. 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.

  8. 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 …

  9. 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 …

  10. Intro to rational expressions (article) | Khan Academy

    When the denominator is 0, you are dividing by 0. Division by 0 is undefined, so any values that cause that are not included in the domain. Otherwise, you can divide by any other number as …