Hi Very simple question: anyone knows how to integrate this? I can't remember and can't find my old notes! It's integral { (x-100) / (50+x)^2 } dx and integral { (50+x)^-2 } dx Thanks!!
Reasonableness check Also, how did we arrive at the 30% and 100k average payment in the reasonableness check? Are we required to provide such checks in the exam?
I figured out the integrations already. For the first one, we need to rewrite the numerator as x+50-150, then split it into two parts. This makes the integral easier. For the second one, we let u = x+50.
The reasonableness check is very rough and ready - anything reasonable would suffice. Normally the examiners don't give marks for this sort of thing, but it's a good thing to do if you have time as it shows understanding and prevents a really silly answer!
