Question
Finding an Indefinite Integral In Exercises 19-32, find the indefinite integral.$$\int \frac{1}{\sqrt{x^{2}-4}} d x$$
Step 1
This substitution is made because the integral resembles a standard result $\int \frac{1}{\sqrt{a^{2}-x^{2}}} dx = \sin^{-1}(\frac{x}{a}) + C$. Show more…
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