OCR Core 1 Mathematics

OCR Maths C1

I thought this was the hardest out of all the past papers i have done but still i think i did quite good lol. HOwd everyone else do? :biggrin:

Did everyone else get a stationary point co-ordinate for y of like 2 and 22/27. Lol and the two lines AC and BC were not perpendicular?? any1 agree with that.

Reply 1

.x.--Lou--.x.

1

What exam bord are you doing?

Reply 2

~NC~

11

Read the announcement at the top of this page. You are not allowed to discuss edexcel exams atall for 12 hours after the exam. This is to make sure people from other countries who havent yet taken the exam do not cheat!

Reply 3

Glutamic Acid

17

I thought it was easy compared other years, not even any difficult circle questions. Knowing me, a few mistakes have crept in. I got (1/3, 76/27) and (-1, 2) for the stationary points IIRC. And yes, the lines weren't perpendicular.

I'm doing OCR btw.

Reply 4

insparato

15

Please for the love of god, if you've done edexcel C1 do not post in here! Read the announcements. (Ive just removed two posts talking about edexcel exams from this thread even though its a OCR one).

Reply 5

RedDevils

OP

3

yeah im probably being a bit over the top lol there was no tangent questions either. I just thought the numbers were a bit annoying lol

yesss thanks that is good news i got 2 and 22/27 not minus lol whichis the same as 76/27 :biggrin:

Reply 6

username62978

3

~NC~

Read the announcement at the top of this page. You are not allowed to discuss edexcel exams atall for 12 hours after the exam. This is to make sure people from other countries who havent yet taken the exam cheat!

I think there should be a "don't" in there somewhere...

Reply 7

Glutamic Acid

17

RedDevils

yeah im probably being a bit over the top lol there was no tangent questions either. I just thought the numbers were a bit annoying lol

yesss thanks that is good news i got 2 and 22/27 not minus lol whichis the same as 76/27 :biggrin:

Phew, I was getting worried too. :smile:

I've got the question paper here too.

Reply 8

~NC~

11

username62978

I think there should be a "don't" in there somewhere...

edited

Thanks

(edited 4 years ago)

Reply 9

RedDevils

OP

3

Glutamic Acid

Phew, I was getting worried too. :smile:

I've got the question paper here too.

lol really can u tell me the original formula for the stationary point question please lol thanks

Reply 10

Glutamic Acid

17

RedDevils

lol really can u tell me the original formula for the stationary point question please lol thanks

8 (i) Find the coordinates of the stationary points on the curve y = x^3 + x^2 - x + 3.

Reply 11

mhsc

17

I thought that was most definitely the worst C1 paper I've seen. :eek:

Only one Q in there I couldn't do, but the rest were just ridiculously time consuming with *loads* of room for a tiny calculation error to ruin everything.

Only Q i could not do was the last part of the last Q (10ii i think?). I can't remember it now but at the time I was just like "gah" and ran out of time trying to solve it :rolleyes:

Although I did write down x=-1 at the bottom because it seemed to me that was the answer at the time? Is that right? (just wrote it down, none of my working ever got to that point :p:

)

Also did 10i) really quickly, only wrote 2 lines down to do it, but then as they came to collect it I realised it was a 5 mark question.

WTF 5 marks for that question (second differential). Takes about 2 seconds? Guess I didn't write my working out enough so I probably only got 2 or 3 out of 5 :rolleyes:

*hates the very concept of C1!*

Reply 12

r_patel91

2

Glutamic Acid

I thought it was easy compared other years, not even any difficult circle questions. Knowing me, a few mistakes have crept in. I got (1/3, 76/27) and (-1, 2) for the stationary points IIRC. And yes, the lines weren't perpendicular.

I'm doing OCR btw.

thats wat i got :biggrin:

Reply 13

Glutamic Acid

17

You might still get the 5 marks for a correct answer, plus method marks are given for small things such as the powers of x etc.

Reply 14

nuodai

17

RedDevils

Did everyone else get a stationary point co-ordinate for y of like 2 and 22/27. Lol and the two lines AC and BC were not perpendicular?? any1 agree with that.

If you're talking about Q8i, I got the stationary points to be (1/3,76/27) and (-1,4)*, which seemed really weird but most of my friends got the same answer :P And I found that AC and BC weren't perpendicular too, but the point of the question was to show your working and say why they weren't perpendicular.

There were some dodgy numbers on that exam, and the questions weren't much like any past papers I've done, but I'm not too bothered :biggrin:

*I wrote something like this for 8i:

Spoiler

Can anyone remember what the last part of question 10 was? I think I may have screwed it up, but I don't remember what the question was (I remember my answer though).

Reply 15

Glutamic Acid

17

For 4(i) 10^p = 0.1, I wrote the question down as 10^p = 0.01 :eek:

and therefore p = -2. Luckily I realized my mistake about 10 minutes before the end.

Reply 16

Glutamic Acid

17

nuodai

If you're talking about Q8i, I got the stationary points to be (1/3,76/27) and (-1,4)*, which seemed really weird but most of my friends got the same answer :P And I found that AC and BC weren't perpendicular too, but the point of the question was to show your working and say why they weren't perpendicular.

There were some dodgy numbers on that exam, and the questions weren't much like any past papers I've done, but I'm not too bothered :biggrin:

*I wrote something like this for 8i:

Spoiler

Can anyone remember what the last part of question 10 was? I think I may have screwed it up, but I don't remember what the question was (I remember my answer though).