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The technique of integration by substitution or change of variable is a very effective technique which facilitates the calculation of difficult integrals.
The methodology is very simple, it is necessary to choose a composite of two functions. One composite function to another.
This choice leads to a new calculation. First the calculation of the new differential respecting the new variable, then the modification of the limits (borders) of the integral yes the writing of the new form of the integral which makes it easier to calculate.
Негізгі бет Integration by substitution (change of variables)
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