you know that
...(1)
...(2)
so
but
so
this form the first one
leave the rest for you
The question asks to solve the following for
where
My working:
, , and
I've been told it's wrong, with no explanation as to why.... As usual, I'm probably missing something really obvious?
Thanks for your help!
* Edit - nvm, just had it rechecked and apparently my working is correct...