7.3 Trigonometric Substitution
2
2
a
x
d
−
∫
x
arises when finding the area of a circle or an ellipse (a>0), This can’t
be done with regular substitution so we will look at a method of substitution called
trigonometric substitution
. There are some problems that can be done with either
regular substitution or trig substitution.
These are of a specific form - not just any integral with a square root.
We will refer to the table on page 484 when working these problems.
The examples we will do in class are #2,6,and 16.

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