OCR Maths Core 2 - 17/01/2012

Original post by shmalistair

on Q9 I got 1/2X as being 1.01pi and something else, but I'm definitely making the assumptions thats wrong as it was between -2pi and 2pi. So I dunno.. With stuff I was confident on I tallied it about 75%

Did anyone else find the intergral question worth 8 marks almost too easy? I got 4.4 as my answer.. So I'm also thinking I got that wrong as well.

I got 4.4 too :biggrin:

Reply 42

4.4 was right, 0.5x was 1.01 not not 1.01 pi

Reply 43

shmalistair

Original post by Doctor.

I got 4.4 too :biggrin:

Glad to hear I'm not the only one! A reasonably easy 8 marks I think. I got stuck on the AP to GP question where u1 u5 and uP = u1, u2 u3.. I got P as 6 hahaha.

p was 8

Original post by Moi786

p was 8

oh well, hopefully I'll get some sort of working out mark. I think I got part of the working right.

Hopefully will get a fair few on the last one aswell.

Reply 46

Original post by shmalistair

Glad to hear I'm not the only one! A reasonably easy 8 marks I think. I got stuck on the AP to GP question where u1 u5 and uP = u1, u2 u3.. I got P as 6 hahaha.

I got P=3 (whole number)

Original post by Moi786

p was 8

How the hell did you even get that?

Reply 47

Original post by Doctor.

I got P=3 (whole number)

How the hell did you even get that?

I don't remember but I compared answers with some clever people and that's what they got. I think I combined the geometric arithmetic equations somehow? How many marks was that?

Reply 48

Scippi

Would be helpful if someone could take a few pictures of the paper and upload them :P

Moi, how did you get 4.4 btw? did you have to solve the 2 equations and then integrate?

Reply 49

Original post by Scippi

Would be helpful if someone could take a few pictures of the paper and upload them :P

Moi, how did you get 4.4 btw? did you have to solve the 2 equations and then integrate?

I didn't because I made a stupid mistake but I know that was the right answer. Basically you intwegrate both equations. One of them between 0 and 1 and the other between 1 and 2. Then you add them together and its 2+ 2.4 I think

Reply 50

Original post by Moi786

I don't remember but I compared answers with some clever people and that's what they got. I think I combined the geometric arithmetic equations somehow? How many marks was that?

I did all that :smile:

. Don't see how that could add up either :redface:

It was like 3 marks : :h:

(edited 12 years ago)

Reply 51

Original post by Moi786

I didn't because I made a stupid mistake but I know that was the right answer. Basically you intwegrate both equations. One of them between 0 and 1 and the other between 1 and 2. Then you add them together and its 2+ 2.4 I think

You're right it was defi 4.4 (I think)

Reply 52

Where o where is Mr M?

Reply 53

Original post by Moi786

Where o where is Mr M?

i dunno, hope he is making the MS. He is the best!

Exciting news: Last Activity 9 Minutes Ago -Mr M

(edited 12 years ago)

Reply 54

Yay what would we do without him

Reply 55

cm04

did anyone on the log question get a quadratic and get x=1 y=3, x = 1/3 y=9 ? or something like that ?

Reply 56

Original post by cm04

did anyone on the log question get a quadratic and get x=1 y=3, x = 1/3 y=9 ? or something like that ?

i got that :smile:

EDIT: i did it wrong initially, then went back and was like, I am a RETARD. Changed method and was all :h:

Reply 57

JY_KO

I think I've failed both C1 and C2 :frown:

I got something like 13 for question 7b- I rearranged the equations in terms of y and then did the integration with the boundaries 6-0.. and I knew that my answer was wrong cuz the area was much smaller than 2x6

I am just curious about the UMS for these exams... aren't they much more difficult compared to the past ones?

Reply 58