Year 12s: what will be the first way you research your future options? >>

OCR Core 2 Maths: Wednesday 25th May 2016

Scroll to see replies

Reply 80

Billy_Boi

What was 1ii again? I got 10 but what did you need to do for 1ii? I have completely forgotten the exam.

Reply 81

bluegirl64

Predictions for grade boundaries?

Reply 82

Shariqameen

It was to find the lenght of bc which was 5. Something

Reply 83

Billy_Boi

Original post by bluegirl64

Predictions for grade boundaries?

Last years was 57/72, and that one was easier, so my predictions would be that this would be 56-60 this year. Nothing too high, nothing too low. Hopefully however C1 is lower than normal.

Reply 84

MarkRycz

Original post by JoshH2016

For Q9, I got:

A=5/3 and k=root3/2

This is what I think I got for this too

Reply 85

Annonomous09

Original post by jacklfc99

unofficial mark scheme?

http://www.thestudentroom.co.uk/showthread.php?t=4118305

Reply 86

Stephen65golf

How did you work out the answer to 9ii and 9iii?

Reply 87

Carter1

[QUOTE=Stephen65golf;67533450]How did you work out the answer to 9ii and 9iii?

Hey Stephen, if you remind me of the question I can take a look at it for you :smile:

Reply 88

Stephen65golf

Original post by Carter1

Hey Stephen, if you remind me of the question I can take a look at it for you :smile:

9ii given that x=1/5 pi and x= 2/5 pi are the 2 smallest +ve solutions of sin (ax)=k where k is a +ve constant, find the values a and k.

9iii given instead that sin (ax) = root 3 cos (ax). Find the 2 smallest +ve solutions for x giving your answers in an exact form in terms of a.

Stephen

Reply 89

MoniC255

Could anyone go through question 9)ii and 9)iii please? Could you show the working for each question? Thanks