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Edexcel FP3 - 27th June, 2016 watch

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1. (Original post by blahblah21)
please explain again please, if you dont mind, sorry to bother
There you go. I hope that explains it. If not just tell me and I'll be glad to explain further.
2. (Original post by target21859)

There you go. I hope that explains it. If not just tell me and I'll be glad to explain further.
Yeah I get it now thank you (:
3. (Original post by blahblah21)
Yeah I get it now thank you (:
No problem
4. Learning Fp3 atm

Can someone help me with a reduction formulae question from the book?

You're given .

I tried IBP setting u=(a^2-x^2)^n but ended up having to deal with an integral and the power of x increases by 2 each time you try to IBP it so clearly that's a dead end.
5. (Original post by target21859)

There you go. I hope that explains it. If not just tell me and I'll be glad to explain further.
Sir i still didnt get why we put a 2π in the formula instead of one... in my mind a i see that with a single pi a full circle is formed 🤔?
6. (Original post by Kvothe the arcane)
Learning Fp3 atm

Can someone help me with a reduction formulae question from the book?

You're given .

I tried IBP setting u=(a^2-x^2)^n but ended up having to deal with an integral and the power of x increases by 2 each time you try to IBP it so clearly that's a dead end.
does it not tell you to show something? Sure one could find a formula without having something to aim for but I don't recall many questions not having that..
7. May the force be with you all
I have 2 days to prepare for FP3 and S2................
8. (Original post by 13 1 20 8 42)
does it not tell you to show something? Sure one could find a formula without having something to aim for but I don't recall many questions not having that..
It does.

Given that where is a positive constant,

show that, for , .
9. (Original post by lawlieto)
May the force be with you all
I have 2 days to prepare for FP3 and S2................
Same. I'm actually learning a lot of it in those 2 days too :/.
10. (Original post by Kvothe the arcane)
Same. I'm actually learning a lot of it in those 2 days too :/.
I did S2 and FP3 in May last time... I kind of forgot a lot, I had 9 exams in the meantime, I was concentrating on those...
S2 is kind of ok i think, 1 day is probably enough but FP3 is a different thing
how important is S2/FP3 for meeting your offer?
11. I'm rekt for my Physics A level as well as this module.
12. (Original post by lawlieto)
I did S2 and FP3 in May last time... I kind of forgot a lot, I had 9 exams in the meantime, I was concentrating on those...
S2 is kind of ok i think, 1 day is probably enough but FP3 is a different thing
how important is S2/FP3 for meeting your offer?
I don't know. 50% of me thinks I have met the A* requirement in Chemistry in which case I only need to get a C in S2 or A in Fp3 (UC originally) to get an A overall.
But if I need an A* then one of them will have to be over 90%.
13. (Original post by Kvothe the arcane)
It does.

Given that where is a positive constant,

show that, for , .
This was a tricky one somewhat (I haven't spent all this time trying to do it lol, to clarify)
Use difference of two squares, that's the starting point
14. (Original post by Takis6666)
Sir i still didnt get why we put a 2π in the formula instead of one... in my mind a i see that with a single pi a full circle is formed 🤔?
Oooh Sir? haha I'm a student. The 2pi is always there. If you have the edexcel FP3 textbook there's a short derivation of the formula if you're confused about where the 2pi comes from. It's page 82 but you can probably find a better and more complete version online. You don't need to know how to derive for the exam don't worry
15. (Original post by 13 1 20 8 42)
This was a tricky one somewhat (I haven't spent all this time trying to do it lol, to clarify)
Use difference of two squares, that's the starting point
I don't see why you need to use the difference of two squares. I did by leaving it as it was and it took less than half a page.
16. (Original post by Kvothe the arcane)
Learning Fp3 atm

Can someone help me with a reduction formulae question from the book?

You're given .

I tried IBP setting u=(a^2-x^2)^n but ended up having to deal with an integral and the power of x increases by 2 each time you try to IBP it so clearly that's a dead end.
It's not a dead end. Try and split it up. If you're really stuck I have the solution but it's always better to try your best to solve it first.
17. (Original post by target21859)
It's not a dead end. Try and split it up.
I asked on whatsapp and Euclidean has done it if anyone's interested.

Sent from my SM-G925F using Tapatalk
18. (Original post by Kvothe the arcane)
I asked on whatsapp and Euclidean has done it if anyone's interested.

Sent from my SM-G925F using Tapatalk
Huh I did it a slightly different way.
19. (Original post by target21859)
Huh I did it a different way.
The versatility of mathematics
20. (Original post by Euclidean)
The versatility of mathematics
True that. I've always done problems like that by putting it in a form that would merge with what's next to it and then add or subtract what I added.

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