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  1. Worked example: Order of operations (PEMDAS) - Khan Academy

    The order of operations (PEMDAS) is essential for solving complex math problems. PEMDAS stands for Parentheses, Exponents, Multiplication and Division (same level), and Addition and …

  2. Functions: FAQ (article) - Khan Academy

    A function is a mathematical rule that matches inputs to outputs. We can think of it like a machine: put a number in, the machine does some calculations, and out pops a corresponding number.

  3. Algebraic expressions | Algebra basics | Math | Khan Academy

    The core idea in algebra is using letters to represent relationships between numbers without specifying what those numbers are! Let's explore the basics of communicating in algebraic …

  4. Functions | Algebra 1 | Math | Khan Academy

    Practice Function rules from equations Get 3 of 4 questions to level up! Practice Not started

  5. Applying the chain rule and product rule (video) | Khan Academy

    We start by applying the chain rule first, then the product rule. Next, we switch it up, using the product rule first, then the chain rule. Discover how these different approaches lead us to the …

  6. Derivatives: definition and basic rules | Khan Academy

    Another common interpretation is that the derivative gives us the slope of the line tangent to the function's graph at that point. Learn how we define the derivative using limits. Learn about a …

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

    A rule which assigns multiple outputs to a single input is called a "relation" instead of a "function". Relations are common and important; they are simply a different thing.

  8. Expressions with exponents | Algebra basics | Math | Khan Academy

    Expand your algebra superpowers by introducing exponents! Let's build our toolkit that allows us to manipulate exponents algebraically.

  9. Calculus 1 | Math | Khan Academy

    Unit 1 Limits and continuity Unit 2 Derivatives: definition and basic rules Unit 3 Derivatives: chain rule and other advanced topics Unit 4 Applications of derivatives Unit 5 Analyzing functions …

  10. Math | Khan Academy

    Learn seventh grade math aligned to the Eureka Math/EngageNY curriculum—proportions, algebra basics, arithmetic with negative numbers, probability, circles, and more.