Hi I'm doing the FP3 paper and I'm at a loss, I'm stuck on question 6 and it's a standard procedure but I just don't understand.
6a) I solved the equations simultaneously and I got the answer so this is fine
6b) So I tried to do the discriminant of it b^2-4ac=0 but I can't seem to get the answer they want?
6c) I tried differentiating and subbing the values in but after looking at the markscheme it's wrong and I don't understand why that's not a valid procedure.
FP3 Edexcel June 2009 Paper Watch
- Thread Starter
- 15-04-2016 10:49
- Official Rep
- 17-04-2016 12:03
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Just quoting in Puddles the Monkey so she can move the thread if needed
Spoiler:Show(Original post by Puddles the Monkey)