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  1. Calculus 1 | Math | Khan Academy

    Limits of combined functions: products and quotients Conclusions from direct substitution (finding limits) Next steps after indeterminate form (finding limits)

  2. Substitution method review (systems of equations) - Khan Academy

    The substitution method is a technique for solving a system of equations. This article reviews the technique with multiple examples and some practice problems for you to try on your own.

  3. Khan Academy | Free Online Courses, Lessons & Practice

    Created by experts, Khan Academy’s library of trusted, standards-aligned practice and lessons covers math K-12 through early college, grammar, science, history, AP®, SAT®, and more.

  4. Limits and continuity | Calculus 1 | Math | Khan Academy

    Practice Conclusions from direct substitution (finding limits) Get 3 of 4 questions to level up!

  5. 𝘶-substitution: double substitution (video) | Khan Academy

    Finding the indefinite integral of cos (5x)/e^ [sin (5x)]. To do that, we need to perform 𝘶-substitution twice. Created by Sal Khan.

  6. Calculus 2 | Math | Khan Academy

    Unit 2: Integration techniques Unit mastery: 0% Integrating with u-substitution Integrating using long division and completing the square Integrating using trigonometric identities …

  7. 8th grade math - Khan Academy

    Learn eighth grade math—functions, linear equations, geometric transformations, and more. (aligned with Common Core standards)

  8. Integrals | Integral Calculus | Math | Khan Academy

    We can approximate integrals using Riemann sums, and we define definite integrals using limits of Riemann sums. The fundamental theorem of calculus ties integrals and derivatives together …

  9. Algebra 1 | Math | Khan Academy

    Khan Academy's Algebra 1 course is built to deliver a comprehensive, illuminating, engaging, and Common Core aligned experience! **Teaching this course? Check out our [teacher resources] …

  10. 𝘶-substitution intro (video) | Khan Academy

    In these series of videos (U-substitution) you introduce the treatment of the derivative operators (dx, du, etc) as fractions. You specify that they really are not, but treat them like that anyway.