Yes, you are correct that because .
The fact that satisfies means that factors:
. Here, since but , we have .
Finally, that . Easy to find the reciprocal of that, isn't it?
Firstly, I apologise if this is in the wrong forum. I spent quite a bit of time looking through the different forums and this seems to be the one most appropriate.
Let be such that and . Evaluate without calculating explicitly the values of .
So far I have rewritten as by substituting but am not sure how to proceed from here.