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## Homework Statement

integral 1/(x(sqrt(x^2 - 4)))

## Homework Equations

I don't know if there are any "equations" for integrals...

## The Attempt at a Solution

Int(1/(x(Sqrt(4(x^2 /4)-1)

Int(1/(2x(Sqrt((x^2 /4)-1)

1/2 int(1/(x(Sqrt((x /2)^2)-1)

U-sub

u=x/2

du=1/2 dx

2du= dx

(This is where I hit a wall..I have no clue what I'm doing)