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  1. Functions | Algebra 1 | Math | Khan Academy

    About this unit A function is like a machine that takes an input and gives an output. Let's explore how we can graph, analyze, and create different types of functions. Unit guides are here! …

  2. Khan Academy | Khan Academy

    Explore algebraic functions with interactive lessons and exercises on Khan Academy, enhancing your understanding of mathematical concepts and problem-solving skills.

  3. What is a function? (video) | Functions | Khan Academy

    Functions assign a single output for each of their inputs. In this video, we see examples of various kinds of functions.

  4. 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.

  5. Finding inverse functions (article) | Khan Academy

    The definition of a function is that each input creates only one output value. For a function to have an inverse, the relationship must be that there is a 1-to-1 relationship between its input values …

  6. What is a function? (video) | Khan Academy

    A function-- and I'm going to speak about it in very abstract terms right now-- is something that will take an input, and it'll munch on that input, it'll look at that input, it will do something to that input.

  7. Intro to inverse functions (video) | Khan Academy

    Sal explains what inverse functions are. Then he explains how to algebraically find the inverse of a function and looks at the graphical relationship between inverse functions.

  8. How to find the range of a function (video) | Khan Academy

    The range of a function is the set of all possible outputs the function can produce. Some functions (like linear functions) can have a range of all real numbers, but lots of functions have a more …

  9. Worked example: Evaluating functions from equation - Khan …

    When you write f(x), it tells us that there's a function called f whose output value comes from input called x. Functions are evaluated at certain input values by replacing it with a number; for …

  10. Function symmetry introduction - Khan Academy

    Yes, a function can be neither even nor odd since it is possible to have a graph that is not symmetric with respect to the y ‍ -axis or the origin.