Turn on thread page Beta
 You are Here: Home >< Maths

# Edexcel FP3 - 27th June, 2016 watch

• View Poll Results: How did you find the Edexcel FP3 exam?
Very hard
41
8.40%
Hard
69
14.14%
Normal
156
31.97%
Easy
165
33.81%
Very easy
57
11.68%

1. (Original post by ホク水ね)
Is reflections in planes and lines in vectors on the syllabus? I've seen questions of it in June 2014 IAL etc. but it's not specifically in the spec or in the textbook?
Yes it is. It's in the review exercises. It's from C4, I believe.
2. (Original post by Ayman!)
Yes it is. It's in the review exercises. It's from C4, I believe.
do you think there will be vector proofs. like convert the equation of r.n=p, into cartesian equation form by replacing r by xi+yj+zk and n by n1i+n2j+n3k
3. what would In = the integral of sin(nx)/sinx be
4. (Original post by kingaaran)
I chose to go all out on S2 tbf, it's an easy 100%
Is that for everyone?
5. Can someone please explain how to do this?

This is from June 2013.

I understand how to get the B value. But not the rest?? It always messes me up!
Attached Images

6. (Original post by Inges)
Can someone please explain how to do this?

This is from June 2013.

I understand how to get the B value. But not the rest?? It always messes me up!
The line that the planes intersect at is parallel to the perpendicular to both planes, hence why we take the cross product of both directions of the planes.

We then let either x, y or z equal zero (as the lines are infinite, there will be a point when either of these three values equal zero.

We then set up a system of simultaneous equations, substituting either X=0, y=0, or z=0 into both equations of the planes (might need to convert to Cartesian to see this).

Once done, you have a point on the plane (from the above) and the direction of the line.

You can then shove it in your equation of a line
7. (Original post by Inges)
Can someone please explain how to do this?

This is from June 2013.

I understand how to get the B value. But not the rest?? It always messes me up!
i explained this question to someone on this thread try going to the other pages to look for my comment but in return could you help me with a question?
8. could someone please help me with this question. found it when looking through fp3 spec.
Attached Images

9. (Original post by Major-fury)
i explained this question to someone on this thread try going to the other pages to look for my comment but in return could you help me with a question?
I've just thumbed up your question dude cause I have no idea how those two reduction formula work first time seeing them!

I have a feeling its where you set you U and dV/dX the other way around to get an increasing reduction formula? Does that ring any bells?
10. (Original post by Inges)
I've just thumbed up your question dude cause I have no idea how those two reduction formula work first time seeing them!
i just figured it out got someone to explain it to me lmao
11. (Original post by Inges)
I've just thumbed up your question dude cause I have no idea how those two reduction formula work first time seeing them!

I have a feeling its where you set you U and dV/dX the other way around to get an increasing reduction formula? Does that ring any bells?
you let sin(nx)=sin((n+2)x-2x) and then the rest is trig
12. (Original post by Major-fury)
could someone please help me with this question. found it when looking through fp3 spec.
Consider using In - In-2, and combining the two to form the integral of one fraction.

You integrate once at the very end, and it is just a basic integral (no parts or anything like that).
13. Whats the area of a parralelpiped?
14. (Original post by Major-fury)
i just figured it out got someone to explain it to me lmao
I've just found your explanation as well and figured my problem out!

Easy peasy. Thanks dude
15. (Original post by Hineshtailor)
Whats the area of a parralelpiped?
|a.(b x c) |
16. (Original post by Inges)
I've just found your explanation as well and figured my problem out!

Easy peasy. Thanks dude
no problem man

17. Thoughts on this one? No idea where to start! I was thinking using the sin A - sin B formula that we never use in C3.
18. (Original post by oinkk)

Thoughts on this one? No idea where to start! I was thinking using the sin A - sin B formula that we never use in C3.
Where did you find this???
19. (Original post by Major-fury)
no problem man
Hey dyou think you could write out on a piece of paper how you'd do the sin nx integral and upload it?

I just tried it using the manipulation you said but I cant hack it??
20. (Original post by Inges)
Where did you find this???
It's in a book called "Further Pure Mathematics" and was written around the time of the Stone Age.

This actual question is from 1976.

https://www.amazon.co.uk/gp/aw/d/085...7JL&ref=plSrch

Turn on thread page Beta

### Related university courses

TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

This forum is supported by:
Updated: August 20, 2016
Today on TSR

### Exam Jam 2018

Join thousands of students this half term

Poll
Useful resources

## Make your revision easier

Can you help? Study help unanswered threadsStudy Help rules and posting guidelinesLaTex guide for writing equations on TSR

## Groups associated with this forum:

View associated groups

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE