1. The problem statement, all variables and given/known data Take the integral of (sqrt(x^2-1)/X) bounded from 2 to 1 2. Relevant equations 3. The attempt at a solution (o is supposed to stand for theta) I used the substitution that said x is equal to asec(o) and solved for sec(o). From that I got that x = sec(o). So I set up the triangle I said the adj side was one, the oppisite is sqrt(x^2-1) and the hypt is x. I also took the derivative sec(o) dx and that equals sec(o)tan(o). The next thing I did was substitute sec(o) in for all of the x values. So I got (sqrt(sec^2(o)-1)/sec(o)) * 1/sec(o)tan(o). The 1/sec(o)tan(o) piece takes place of the dx in the integral. So the sec^2(o) converts to tan^2(o) and the sqrt of that is just tan(o). So now it looks like tan(o)/sec(o) * 1/tan(o)sec(o). The tan(o) cancels and I get sec^2(o) in the denominator. 1/sec^2(o). I converted sec^2(o) into 1/cos^2(o). Using my triangle I replaced that with (1/x)^2. I took the integral of this and got 1/2ln(x^2). Plugging in my values I get 1/2ln(4)-1/2ln(1). I factored out the 1/2 and combined the ln's and got 1/2(ln4/1) or just 1/2(ln4). This is wrong and I need help haha. PLEASE.