I dont get what this integration method is? int (du/dx) f'(u)dx; example: int 3 x^5 e^{x^6} dx = (1/2)e^{x^6} + C
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Dr.Peterson
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Was it not explained to you?
It's integration by substitution, which is based on the chain rule. Here are two lessons about it:
Integration by Substitution
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Calculus I - Substitution Rule for Indefinite Integrals
In this section we will start using one of the more common and useful integration techniques – The Substitution Rule. With the substitution rule we will be able integrate a wider variety of functions. The integrals in this section will all require some manipulation of the function prior to...
tutorial.math.lamar.edu