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3. Evaluate Z 1/(sqrt(x^2-4)) dx

3. Evaluate Z 1/(sqrt(x^2-4)) dx

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Answer #1

we have to integrate

we can use trigonometric subs

now, we can use formula

now, we can plug back u

and we get

sec and sec^-1 will get cancelled

now, we can simplify it

and we get

...........Answer

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