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Edexcel S1 question

Can somebody showed me a worked solution to the question 12a which is attached to this post?DSC_0083.jpg
Original post by AC9819
Can somebody showed me a worked solution to the question 12a which is attached to this post?DSC_0083.jpg


I'm guessing that it's the question in the middle?

Think about the two key bits of information you've been given, and what equations you can set up to solve simultaneously.
Reply 2
Original post by AC9819
Can somebody showed me a worked solution to the question 12a which is attached to this post?DSC_0083.jpg


Worked solutions are not allowed on TSR. I encourage you to think of what you have, how you can use the symmetry of the curve and how you can set up equations.
Reply 3
I've just tried the question and I didn't get sigma to be 8, it's been a while since I did S1 so I may be wrong but I think the question is wrong. Can anyone who's more familiar with S1 double check?
Reply 4
I'm pretty sure the question is wrong.

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