Hi, Can I just establish what the derivative of v is? I assumed that as v=1/(1+i), the derivative of v would be -1/(1+i)^2 i.e -v^2. However, based on what I'm seeing in an ASET paper solution, it doesn't look like this is the case, unless I'm not following something correctly. Can I just establish this? Thanks
Yes that's correct. By all means reference the past paper question so that we can help with that (or check for a mistake). Thanks