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Edexcel FP3 June 2015 - Official Thread watch

1. june 2012 question 6d, is the answer just y=0? also how did they get the inequalities x>=a and x<=-a ?
2. FP3 Grade Boundaries
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3. FP3 GRADE BOUNDARIES.pdf (64.7 KB, 145 views)
4. Has anyone done review exercise 2 from the textbook? I don't understand how to find the direction of the line in part d of question 5

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5. (Original post by mmms95)
june 2012 question 6d, is the answer just y=0?
Along with the below, yep

also how did they get the inequalities x>=a and x<=-a ?
The maximum and minimum values cos(theta) can take as theta varies is 1 and -1 respectively. By using that, you should get those inequalities.

6. In the following links there are resources for the FP3 EDEXCEL

HYPERBOLIC FUNCTIONS

MATRICES

VECTORS

INTEGRATION

ARCLENTH & SURFACE

CONICS

REDUCTION FORMULAS
7. How do you do 12 part b?
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8. (Original post by BP_Tranquility)
How do you do 12 part b?
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Find the vector equation of AB, and c must lie on this line

Edit: nvm see teeEms post, I read it as collinear
9. For 11a, I found the vector AC
So r=AC+ lambda (AB) +mu (d)

But in the answers, they do
r=OA+lambda(AB) +mu (d)

Why?

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10. (Original post by BP_Tranquility)
For 11a, I found the vector AC
So r=AC+ lambda (AB) +mu (d)

But in the answers, they do
r=OA+lambda(AB) +mu (d)

Why?

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You just need a point in the plane, hence OA
11. (Original post by BP_Tranquility)
How do you do 12 part b?
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a cross b dot c must be zero
12. (Original post by TeeEm)
a cross b dot c must be zero
Does it? Surely (AB) x (AC) =0 ?

Or are they the same thing

Edit: nvm I read it as collinear, thought I'd outsmarted you there (it wasn't to be :/)
13. (Original post by BP_Tranquility)
For 11a, I found the vector AC
So r=AC+ lambda (AB) +mu (d)

But in the answers, they do
r=OA+lambda(AB) +mu (d)

Why?

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they've used the equation r = a + sb + tc where a is a position vector

in your method you cannot use AC as there is an unkown. i personally would've have found AB x d = n and then formed the vector equation using (r-a)xb=0 but this method seems simpler.
14. june 2014 is the worst paper, i havent marked it yet but i think i just did silly mistakes, honestly if i got that in the exam i would cry lol
15. Ok so feeling pretty unprepared for this exam, haven't touched it in almost a month and feel I've forgotten quite a bit. What are people's advice on what resources to focus on?
16. (Original post by mollyh77)
Has anyone done review exercise 2 from the textbook? I don't understand how to find the direction of the line in part d of question 5

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cross poduct of the normals of both the planes
17. (Original post by adorablegirl1202)
Ok so feeling pretty unprepared for this exam, haven't touched it in almost a month and feel I've forgotten quite a bit. What are people's advice on what resources to focus on?
You should probably get back up to speed with the text book, maybe do some questions from that and when you feel like you know your stuff past papers. I haven't bothered with FP3 for a while and I've basically got Thursday through Sunday to look back at it and S2 (gotta prepare for physics tomorrow) so I'll likely be doing similar soon
18. (Original post by mmms95)
cross poduct of the normals of both the planes
yea i did get that eventually but not 100% on why tbh
not a fan of this module

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19. Hi can anyone help with question 4a) from the old set of questions for FP3 please?
I always get stuck on these type of questions, but I'm confused with the limits and how to use them to get the (pi/2)^n.
https://3a14597dd5c7aa2363f067571766...%20Edexcel.pdf
20. (Original post by mollyh77)
yea i did get that eventually but not 100% on why tbh
not a fan of this module

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cross product of two vectors gives the vector perpendicular to both, if you want i can draw a diagram to help visualise it, this concept is a little more harder when you try to think of the reasoning
21. Hi, glad to see a thread fp3!
Can anyone please suggest me some past papers to do? The tricky ones I mean, cz time is short! Thanks!

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