The Student Room Group
Competition - post a photo you've taken of nature >>
Competition - post a photo you've taken of nature >>
Competition - post a photo you've taken of nature >>

OCR (non mei) C4 Friday 24th June 2016

Scroll to see replies

Original post by djamesh
I did the EXACT same. We were supposed to use .5bh, but we'll probably get a mark or two for working out the correct magnitudes of the required sides.


Didn't it ask you to use the smaller angle? Or have I misread?


Posted from TSR Mobile
Original post by daniellon
For the stationary point question did they ask for exact values?


Yeah, extremely fiddly since you had to use s^2+c^2=1 to find sin(t) first and then substitute back in.
Original post by drandy76
Didn't it ask you to use the smaller angle? Or have I misread?


Posted from TSR Mobile


Yeah, you read it right :smile:
There goes my uni offer after this exam and core 3


Posted from TSR Mobile
Original post by djamesh
Yeah, you read it right :smile:


Then what was the problem with using c as ~12.7 or whatever it was?


Posted from TSR Mobile
Original post by drandy76
Then what was the problem with using c as ~12.7 or whatever it was?


Posted from TSR Mobile


It's because C is opposite of the resultant vector however 12.7 was opposite to one of those vectors.
Original post by Vikingninja
It's because C is opposite of the resultant vector however 12.7 was opposite to one of those vectors.


.........****, so I should've used 90-alpha instead


Posted from TSR Mobile
Original post by drandy76
.........****, so I should've used 90-alpha instead


Posted from TSR Mobile


The two vectors were perpendicular so C would have been 90.
Any one has the paper??? Can you upload the pics please??? Thank you!!
Original post by Vikingninja
The two vectors were perpendicular so C would have been 90.


I believe I have realised the problem, I drew my triangle wrong, have AB perp to OA instead of OB so my angles got mixed around


Posted from TSR Mobile
Reply 290
Avatar for GM16
GM16
1
How many marks will I lose for substituting the bottom as u instead of root u for question 6?


Posted from TSR Mobile
So annoyed at myself, used vector multiplication from FP3 for the area question and managed to get it wrong. Then messed up the easy parts of the parametric question and the last question was just???
Anyone else search the back of their paper, thinking they missed the DE question?


Posted from TSR Mobile
Original post by drandy76
Anyone else search the back of their paper, thinking they missed the DE question?


Posted from TSR Mobile

the last part of the last question was a D.E
Original post by Abscissa
the last part of the last question was a D.E


....oh yeah, didn't even think about it


Posted from TSR Mobile
Reply 295
Avatar for Mandos
Mandos
1
I think I got 66-68 marks.

What do you think 66 will be in UMS? x
Anyone got workings for question 6? For some reason still can't work it through :/
I ran out of time on the last part of the last question. Do you think I'll get a mark for separating the variables? So annoyed cos I could've done it easily if my time management wasn't so poor!
Original post by Mandos
I think I got 66-68 marks.

What do you think 66 will be in UMS? x


Mid to high 90s?
Original post by Inert1a
Would 70/72 be full ums

You obviously know that's full UMS.

Quick Reply

Related discussions

Latest

Trending

Trending

Articles for you