This discussion is now closed.

Check out other Related discussions

Mr M's OCR (not OCR MEI) Core 1 answers January 2012

Reply 60

Ivo

3

Original post by Mr M

Yes lose both marks I think and the 2nd solution to iii) is correct - I just checked on my computer.

OK thanks. What is 70/72 in UMS, roughly?

Reply 61

XingBairong

will I get ECF for 9 if I factorised the equation wrong and plot the graph accordingly?

OP

Original post by carnationlilyrose

I haven't understood a single bit of anything in the OP, but I see how worthy a winner you are of the award. :biggrin:

Be careful - the last English specialist seen wandering in these parts was discovered buried in a shallow grave three weeks later.

Reply 63

Genesis2703

5

Mr M for 7iii) How would you have done about the explanation? What would you have written?

Apart from that I think I did well... I cant remember everything I wrote but I think I got most of them right :smile:

OP

Original post by Ivo

OK thanks. What is 70/72 in UMS, roughly?

Impossible to say! High 90s I expect.

OP

Original post by Genesis2703

Mr M for 7iii) How would you have done about the explanation? What would you have written?

Apart from that I think I did well... I cant remember everything I wrote but I think I got most of them right :smile:

I think it is easiest to explain by sketching the graph but you could have described the shape of a positive cubic and then explained why it only had one real root at x = -2 so it could not cross the axis again.

OP

Original post by XingBairong

will I get ECF for 9 if I factorised the equation wrong and plot the graph accordingly?

Possibly. It is hard to be sure without seeing the mark scheme. You should have at least 3 marks anyway - two for method and one for (0, 12).

Reply 67

Genesis2703

5

Original post by Mr M

I think it is easiest to explain by sketching the graph but you could have described the shape of a positive cubic and then explained why it only had one real root at x = -2 so it could not cross the axis again.

I did a more algebraic explanation refering to the 2 individual brackets, it makes some sense so i should have atleast gotten 1/2.

I didnt think about the graph at the time haha :P

Reply 68

Carnationlilyrose

18

Original post by Mr M

Be careful - the last English specialist seen wandering in these parts was discovered buried in a shallow grave three weeks later.

I think it was me, actually....

I was only being nice..... :frown:

OP

Original post by carnationlilyrose

I think it was me, actually....

I was only being nice..... :frown:

I will be nice back then. You can have a special permit to visit whenever you like.

Reply 70

mcquitmp

Hi,

Can any tell me the details of question 10. My daughter did the exam and can't remember the question but described what she did for part (ii) and to be honest it didn't sound like it was worth 5 marks.

Can someone please reproduce the question so I can work it out.

Thanks...

Reply 71

erniiee

13

Original post by ReviseAlex

Didn't get question 8 or 10 iv) lost 10 marks atleast by getting those two wrong :frown:

bad times

Me too :/

OP

Original post by mcquitmp

Hi,

Can any tell me the details of question 10. My daughter did the exam and can't remember the question but described what she did for part (ii) and to be honest it didn't sound like it was worth 5 marks.

Can someone please reproduce the question so I can work it out.

Thanks...

Show that the tangent to

(x+2)^2 + (y-4)^2 = 5^2

at the point P (-5, 8) is

3x-4y+47=0

The expected method would be to find the gradient of the radius OP, then find the negative reciprocal to get the gradient of the tangent and then substitute the point P into an equation of a straight line.

Reply 73

Carnationlilyrose

18

Original post by Mr M

I will be nice back then. You can have a special permit to visit whenever you like.

Thanks, but I was only popping along to see what kind of academic help you did. I think even an award-winning person such as yourself would struggle to help me out of my innumerate quagmire. Luckily, I have students who can do difficult things like adding up my marks on exam papers for me. For some reason, the AQA seemed to take a fiendish delight in making the old English GCSE syllabuses about as mathematically complex as it was possible to do, given the likelihood of its teachers being, shall we say, on the arts side. A paper with total marks out of 57 just seems wilfully perverse.

Reply 74

mcquitmp

Whoops I think she missed the connection with the circle then.

What part of suffolk do you live in Mr M - Are you available as a private tutor ?

She is not doing well in Core 3 and will probably have to retake in the summer.

Thanks...

Reply 75

gpsmith26

cheers mr M

what was 9 ii) btw?

OP

Original post by carnationlilyrose

A paper with total marks out of 57 just seems wilfully perverse.

The Chief Examiner is a fan of Heinz beans.

OP

Original post by mcquitmp

Whoops I think she missed the connection with the circle then.

What part of suffolk do you live in Mr M - Are you available as a private tutor ?

She is not doing well in Core 3 and will probably have to retake in the summer.

Thanks...

North. I don't do private tuition but am quite happy to help out in the Maths Forum for free.