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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. Functions | College Algebra | Math | Khan Academy

    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.

  3. 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 …

  4. 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.

  5. Functions | Algebra (all content) | Math | Khan Academy

    This topic covers: - Evaluating functions - Domain & range of functions - Graphical features of functions - Average rate of change of functions - Function combination and composition - …

  6. Functions | Algebra 1 (Illustrative Mathematics-aligned) - Khan …

    Using function notation to describe rules (part 1) Learn Worked example: Evaluating functions from equation

  7. Rational functions | Precalculus | Math | Khan Academy

    Divide one polynomial by another, and what do you get? A rational function! We'll analyze the family of rational functions, and we'll see some examples of how they can be useful in …

  8. Trigonometric functions | Trigonometry | Math | Khan Academy

    Practice Midline of sinusoidal functions from graph Get 3 of 4 questions to level up!

  9. Composing functions (article) - Khan Academy

    Walk through examples, explanations, and practice problems to learn how to find and evaluate composite functions.

  10. Trigonometry | Khan Academy

    Explore the world of trigonometry by mastering right triangles and their applications, understanding and graphing trig functions, solving problems involving non-right triangles, and …