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Integration by Substitution
AP Calculus March 27-28, 2017 Mrs. Agnew
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Essential Question Essential Vocabulary
How do you evaluate integrals using substitution? Essential Vocabulary Integration by Substitution Definite Integral Indefinite Integral
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Integration by Substitution
So far, we have evaluated only those integrals where we could find an antiderivative using our rules. Evaluate the following… what is the problem?
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Integration by Substitution
Given a composite function (a “function within a function”), the antiderivative is given by… Integration by substitution “undoes” the chain rule for differentiation.
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Integration by Substitution
We will be making the following substitutions u = g(x) and du = g'(x) So rewriting the previous formula…
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Integration by Substitution
Find the “inside” function and its derivative. Replace the “inside” function with u and its derivative with du. Find the antiderivative. Replace u with the function and simplify. CHAIN RULE IN REVERSE! Practice: Page #2 – 29 (Every 3rd)
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Definite Integrals When using integration by substitution with definite integrals, you must adjust the limits of integration. a and b are the original limits of integration u = g(x)
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Practice and Homework Guided Practice Homework
Page #38 – 44 (E), 50, 56 Homework See Worksheet Provided Homework may be collected for grade
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