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# Edexcel FP3 June 2015 - Official Thread watch

1. Does anyone know of any more questions I can do? I've done all of the past papers and the pdf that has al the relevant questions from 2002-now, I don't think doing the same questions over again is too effective..
2. (Original post by Elcor)
Could someone explain what their method would be for part (d) of this question please? Here was my method but it was fairly algebra-heavy and I'm rusty on vectors so I'm wondering if there's an easier way:

Find the plane that l2 lies in by using r.n=b.n (plane has same normal vector but passes through B)
Sub components of D into Cartesian equ of this plane to get a linear equation with a in terms of b
Use Pythagoras with the given distance and sub in previous equation to get a quadratic in terms of b
Solve for b then sub back into equation for a.
This is what i did (hopefully correct)

Find AC, use this as direction vector of l2, form equation of line with this and point B.

Since B lies on this line, equate vector B to L2 to get a=3 and b = -6?

Is that right?
3. (Original post by chemlover12)
I-zero = the integral of one (limits of 0 --> sqrt3)
I forgot about the limits, now I feel stupid. Thanks for the help
4. (Original post by smem_96)
I forgot about the limits, now I feel stupid. Thanks for the help
Haha, no worries
5. (Original post by Ilovemaths96)
This is what i did (hopefully correct)

Find AC, use this as direction vector of l2, form equation of line with this and point B.

Since B lies on this line, equate vector B to L2 to get a=3 and b = -6?

Is that right?
When trying to assist I ended up doing a similar long method and getting the same answers; your method is probably the hoped for quick one
6. (Original post by Ilovemaths96)
This is what i did (hopefully correct)

Find AC, use this as direction vector of l2, form equation of line with this and point B.

Since B lies on this line, equate vector B to L2 to get a=3 and b = -6?

Is that right?
Yeah that's right
7. (Original post by luckystar1900)
Does anyone know of any more questions I can do? I've done all of the past papers and the pdf that has al the relevant questions from 2002-now, I don't think doing the same questions over again is too effective..
Check out http://mathematics-solutions.co.uk/E...tory/index.php for pre 2000 spec questions :P
8. FP3 and S2 at the same time. Why?
9. (Original post by Boop.)
Check out http://mathematics-solutions.co.uk/E...tory/index.php for pre 2000 spec questions :P
Thank you!

(Original post by simonli2575)
FP3 and S2 at the same time. Why?
Haha right??? Especially silly as most people taking S2 are further mathematicians so are likely to be doing FP3 as well! They should have put S2 on same day as M5 or even have FP3 tomorrow or something...
10. (Original post by luckystar1900)
Haha right??? Especially silly as most people taking S2 are further mathematicians so are likely to be doing FP3 as well! They should have put S2 on same day as M5 or even have FP3 tomorrow or something...
Don't you mean today?
11. Only just realised that my cashed in Maths A Level will be recashed, they'll rearrange modules, and essentially I need 17 UMS max in this for my A*. Not too much lower than the 35 I thought I needed but still takes some more pressure off 😂

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12. (Original post by simonli2575)
Don't you mean today?
Yeah haha, forget what day it is without regular school
13. (Original post by luckystar1900)
Yeah haha, forget what day it is without regular school
We boarders are still forced to go to school for breakfast. God ****ing dammit.
14. Cant even be bothered for this exam tbh.

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15. Can someone help me with 3b and 3c.

https://3a14597dd5c7aa2363f067571766...%20Edexcel.pdf
16. (Original post by physicsmaths)
Cant even be bothered for this exam tbh.

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How was STEP III?

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17. for example 33 of green pearson textbook, we could just use the formula given in the formula book for perpendicular distance between point and plane rather than the given method which is slightly complicated right?
18. (Original post by Elcor)
How was STEP III?

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Pretty ****

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19. (Original post by physicsmaths)
Pretty ****

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Sounded like you banged step II tho
20. (Original post by DanTheMan358)
Sounded like you banged step II tho
Na didn't bang it one of my solutions had errors so I'm sitting in 70s which might not even get me a 1. My partials were **** aswell.

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