f(x) = (x-1)/ sqrt(x^2-x-2)

so far i know...

1. that x^2-x-2 can be factored to (x+1)(x-2)

2. region of x-values where f(x) is undefined

3. vertical asmptote at 2 and -1

4. horizontal at 1 and -1

Now basically i will be graded on my graph ... so if anyone know what the graph will look like.... I will appreciate a lot.

Thanks