HP 48gII Graphing Calculator Manual de usuario Pagina 453

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Page 13-18
Integrating an equation
Integrating an equation is straightforward, the calculator simply integrates
both sides of the equation simultaneously, e.g.,
Techniques of integration
Several techniques of integration can be implemented in the calculators, as
shown in the following examples.
Substitution or change of variables
Suppose we want to calculate the integral
dx
x
x
2
0
2
1
. If we use step-by-
step calculation in the Equation Writer, this is the sequence of variable
substitutions:
This second step shows the proper substitution to use, u = x
2
-1.
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