Edexcel FP3 June 2015 - Official Thread

Original post by chermaine123

For vector question, if I use A as my position vector, is it wrong?

No! The line through AB is not unique - you could have used A/B as the 'jump-on' point or any other point on the line - therefore an infinite amount of solutions.

You could have had the 'unit of movement' to be any multiple of itself also

Reply 1042

chermaine123

2

Original post by Chazatthekeys

No! The line through AB is not unique - you could have used A/B as the 'jump-on' point or any other point on the line - therefore an infinite amount of solutions.

You could have had the 'unit of movement' to be any multiple of itself also

Thanks!

Reply 1043

Original post by chermaine123

Thanks!

No worries :smile:

Reply 1044

nayilgervinho

7

what would 45/75 be in ums

Reply 1045

So do people think the grade boundaries will be higher than last year?

Reply 1046

Original post by Emmi12345

So do people think the grade boundaries will be higher than last year?

I honestly don't think they'll be as low as last years!

Reply 1047

Unofficial Mark Scheme:

https://drive.google.com/folderview?id=0B2yfoJrIQ5MCfk1LR0FuODlIaWEwdG1xTDZVZTJMTHk4X3pVQTgzNDR4c0x3U1ZDVElHeDA&usp=sharing

Reply 1048

Original post by physicsmaths

Turns out 1 was right so i didnt forget to times by 1/2!

Posted from TSR Mobile

Yay, one extra mark for us! :smile:

Reply 1049

Original post by Chazatthekeys

I honestly don't think they'll be as low as last years!

Yeah, that's what I said! Are there any unofficial predicted boundaries floating around?

Reply 1050

Original post by Emmi12345

Yeah, that's what I said! Are there any unofficial predicted boundaries floating around?

There might be back in the thread - the only way we'll know for sure is a few days before results day! aha

Reply 1051

Original post by Chazatthekeys

There might be back in the thread - the only way we'll know for sure is a few days before results day! aha

Oh yeah... when are they posted, do you know? Is it the night before results day or something? haha

Reply 1052

TeeEm

19

solutions to this year's FP3 in my "office"
http://www.thestudentroom.co.uk/showthread.php?t=3327325

(edited 8 years ago)

Original post by TeeEm

solutions to this year's FP3 in my "office"
http://www.thestudentroom.co.uk/showthread.php?t=3327325

Cheers for the solutions
How many marks do you think I'd lose on 8a/8b if I accidentally used the wrong formula for finding the value of e/directrices/focii? (I used hyperbola instead if ellipse) :frown:

Posted from TSR Mobile

Reply 1054

A*desperate!

HIIII guys..
Bit late to get here, but yestersday's paper was child ABUSE! hate it hate it!

Reply 1055

bigmansouf

20

why? what went wrong

CHILD ABUSE :hmmmm2:

Reply 1056

TheFarmerLad

22

Please be 59 for 90 ums!!

Reply 1057

LukeTownsend123

2

For Question 8B, I did the whole question using the general focus and ellipse equations and not using the exact value. Then, I ended up with 2a and subbed in my a = 2 at the end, would I still gain full credit?

Reply 1058

Gome44

Original post by LukeTownsend123

For Question 8B, I did the whole question using the general focus and ellipse equations and not using the exact value. Then, I ended up with 2a and subbed in my a = 2 at the end, would I still gain full credit?

Yes

Reply 1059