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# Edexcel FP2 Official 2016 Exam Thread - 8th June 2016 watch

1. guys. am i the only one that found the last 3 questions of review ex 1 extremely difficult compared to the others.
2. Thanks for making this thread OP! I've added it to the Exam Directory Thread which you can find here. Use that thread to find discussions on your other exam papers, and do let me know if you spot any that aren't on the list. Good luck with this exam!
3. HI guys, I'm currently doing past papers for FP2 and would like your opinions on which one you think was the hardest?
4. (Original post by techfan42)
HI guys, I'm currently doing past papers for FP2 and would like your opinions on which one you think was the hardest?
Was literally going to ask the same question! Looking back on grade boundaries now but they don't seem to shift much
5. (Original post by TheFarmerLad)
Was literally going to ask the same question! Looking back on grade boundaries now but they don't seem to shift much
yhh. grade boundaries suggest june 07 is the hardest with 51/75 for an A. calm ting

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6. (Original post by TheFarmerLad)
Was literally going to ask the same question! Looking back on grade boundaries now but they don't seem to shift much
They seem to increase by one raw every year.

The papers I've done so far have been trivial though, 2010-13. Which ones have you done?
7. Could anyone help with 9b on this please https://8dedc505ac3fba908c50836f5905...%20Edexcel.pdf june 2005, how do you find the equation for the arg (z-3i)=3pi/4 bit? Thanks :-)
8. (Original post by economicss)
Could anyone help with 9b on this please https://8dedc505ac3fba908c50836f5905...%20Edexcel.pdf june 2005, how do you find the equation for the arg (z-3i)=3pi/4 bit? Thanks :-)
Do you remember what a half line is? (if not, here's the video)

In this case, your loci is the half line passing through the centre of your circle from part (i) and making an angle of 3pi/4 with the horizontal. You want the point where the loci equal each other, that's the point of intersection that I've marked A in the diagram (Zacken sketch)TM below (forgive the excessive colours, it's been a long time since I've played around with paint and I was having fun)

Anyways - you want the point A. You can use easy trigonometry to find the x-coordinate, which will be the "adjacent" or the horizontal bit of the red line. And the y-coordinate comes from the height of the pink line the "opposite" but remember to add 3 to it since you're just finding the height above the centre, but the centre is at (0, 3i).

Oh, and you'll need to make the x coordinate negative, since you're finding the length but you want the coordinate.

And whilst I'm making explanatory edits: remember that the hypotenuse of your triangle thingymabob is 3 since it's the radius.
9. (Original post by Zacken)
Do you remember what a half line is? (if not, here's the video)

Best diagram ever
10. (Original post by edothero)
Best diagram ever
11. (Original post by Zacken)
Do you remember what a half line is? (if not, here's the video)

In this case, your loci is the half line passing through the centre of your circle from part (i) and making an angle of 3pi/4 with the horizontal. You want the point where the loci equal each other, that's the point of intersection that I've marked A in the diagram (Zacken sketch)TM below (forgive the excessive colours, it's been a long time since I've played around with paint and I was having fun)

Anyways - you want the point A. You can use easy trigonometry to find the x-coordinate, which will be the "adjacent" or the horizontal bit of the red line. And the y-coordinate comes from the height of the pink line the "opposite" but remember to add 3 to it since you're just finding the height above the centre, but the centre is at (0, 3i).

Oh, and you'll need to make the x coordinate negative, since you're finding the length but you want the coordinate.

And whilst I'm making explanatory edits: remember that the hypotenuse of your triangle thingymabob is 3 since it's the radius.
Ah got it, thanks so much
12. (Original post by economicss)
Ah got it, thanks so much
No worries.
13. (Original post by ChuckNorriss)
yhh. grade boundaries suggest june 07 is the hardest with 51/75 for an A. calm ting

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Different specification

I don't get the answer which is in the markscheme.
Thanks

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15. the reason why i only put 0.5a into the epe equation is because it becomes slack (not a spring)
Attached Images

16. (Original post by jkhan9625)
I don't get the answer which is in the markscheme.
Thanks
This is the FP2 thread.
17. (Original post by ChuckNorriss)
the reason why i only put 0.5a into the epe equation is because it becomes slack (not a spring)
Thanks for the answer

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18. sketching a graph after doing 1st order or second order dy/dx isnt part of our spec is it?
19. (Original post by ChuckNorriss)
sketching a graph after doing 1st order or second order dy/dx isnt part of our spec is it?
Why not? Fairly sure it is because we do graph sketching in C1/2.
20. (Original post by ChuckNorriss)
sketching a graph after doing 1st order or second order dy/dx isnt part of our spec is it?
It was in the exercises so I would assume it is

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