when did i double post???
anways, im assuming you guys had as much trouble as i did, as when my tutor replied to me telling me that by showing Fn+1 = 1/2(Fn+3 - Fn) is the final answer and all i needed to do was work it out.
If i had have known that in the 1st place i would have been looking at this question in a completely different way.
that wasnt meant to be a dig at you as you took it. not all of us have the same mathematical skills as some hence im trying to get my head round this.
i implyed that you had trouble as really, if i had have known that all i was looking for was proving Fn+1 = 1/2(Fn+3 - Fn), then thats all you would have said.
I thankyou for your help, but did not mean to insult your intellegence, i merely thought you missunderstud it like i did.
But 'the good news' is that i now know how unintellegent i am as my problems are 'so difficult'