C34 January 2016 IAL Model Answers (Edexcel)

I made some really silly mistakes as in Q.13 ( last part) I answered it as root k and in also Q.4 b I got (1/9)^3 as the sf . In the differentiation questions, I did 1/Dt/dT so I don't know if it's right or wrong, also some other pretty silly mistakes

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(edited 8 years ago)

Reply 2

Original post by kprime2

Hi,
these are my model answers to the C34 January 2016 IAL paper for edexcel.
I have done these fairly quickly so let me know if there are silly mistakes.

Fairly simple paper.

Q1-3: standard
Q4: A lot of people would have got 4(b) wrong
Q5-7: standard.
Q8: 8(b) was tedious, integration by parts twice can be easy to lose track in exam conditions
Q9-13: standard

I agree with all of your answers, I made a small slip up in Q3 and forgot to bring the coefficient of the logarithmic term into the logarithm using power rules. Stupid me.

Q5, minor pedantic quibble.

x \in (1, 2)

doesn't really make sense unless you specify that

x

is a root, otherwise it seems like you're saying the domain of

f

is

(1,2)

- you should say

f

has a root

\alpha \in (1,2)

but nobody would lose any marks for writing what you have, of course.

Reply 3

OP

Original post by Zacken

I agree with all of your answers, I made a small slip up in Q3 and forgot to bring the coefficient of the logarithmic term into the logarithm using power rules. Stupid me.

Q5, minor pedantic quibble.

x \in (1, 2)

doesn't really make sense unless you specify that

x

is a root, otherwise it seems like you're saying the domain of

f

is

(1,2)

- you should say

f

has a root

\alpha \in (1,2)

but nobody would lose any marks for writing what you have, of course.

haha I did these answers past midnight around 1am so yea, x has a root alpha in (1,2) is more mathematically accurate.

Reply 4

Original post by kprime2

haha I did these answers past midnight around 1am so yea, x has a root alpha in (1,2) is more mathematically accurate.

Yeah, but nobody really cares at A-Level, anyway, thank you for these! How do you even have time to do all this when you're at uni?! :tongue:

Reply 5

tinkerbella~

13

Original post by Zacken

I agree with all of your answers, I made a small slip up in Q3 and forgot to bring the coefficient of the logarithmic term into the logarithm using power rules. Stupid me.

Agreed

Reply 6

OP

Original post by Zacken

Yeah, but nobody really cares at A-Level, anyway, thank you for these! How do you even have time to do all this when you're at uni?! :tongue:

I guess it's just a hobby. I did my A levels last year so I always find it interesting looking at recent exam papers, since they're usually more harder, especially the IAL ones. The papers don't really take that long to do. It's mainly the scanning, compressing and uploading etc that takes time. I've sat my January exam out of the way so I have a bit more time in hand lol

Reply 7

Original post by kprime2

The papers don't really take that long to do. It's mainly the scanning, compressing and uploading etc that takes time. I've sat my January exam out of the way so I have a bit more time in hand lol

Ah, okay! By the way, quick tip. You can scan in your PDF's and then use this: http://www.splitpdf.com/ to split them up into any section of pages as you want. Download them uncompressed as a zip file, unzip them and then just bulk upload them onto TSR, that'll make sure you don't go over the file size limit.

Might even just be easier to set up a cloud account somewhere, maybe google drive or dropbox and just upload your PDF's there then link it here. The google drive approach actually sounds fairly workable, consider that. It's a breeze to use and it's what all the others do, physicsmathstutor, etc...

Original post by C0pper

Agreed

Love you too.

(edited 8 years ago)

Reply 8

OP

Original post by Zacken

Ah, okay! By the way, quick tip. You can scan in your PDF's and then use this: http://www.splitpdf.com/ to split them up into any section of pages as you want. Download them uncompressed as a zip file, unzip them and then just bulk upload them onto TSR, that'll make sure you don't go over the file size limit.

.

Can I use that to put multiple PDFs into one file? I usually have PDF scans but it takes ages to put them all on one file so I have to paste them on word then save the word file as one single PDF which is just tedious.

Reply 9

Original post by kprime2

Can I use that to put multiple PDFs into one file? I usually have PDF scans but it takes ages to put them all on one file so I have to paste them on word then save the word file as one single PDF which is just tedious.

This is a fantastic site for all your PDF tools, compression, merging, conversion, I use it all the time: http://smallpdf.com/merge-pdf

thank you for that

When is the S1 and S2 exam ?

Reply 12

Original post by Danllo

When is the S1 and S2 exam ?

S1 is on the 27th, I don't know when is the S2 though

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(edited 8 years ago)

Reply 13

baekintouch

Can anyone guess raw mark boundary of A* in C34?

I am also wondering whether (e^(-x/2+c))(x^3)/(3x-2)^2 is correct or not in 9(d) as the answer is (Ae^-x/2)(x^3)/(3x-2)^2

Thank you in advance!

Reply 14

Original post by baekintouch

Can anyone guess raw mark boundary of A* in C34?

I am also wondering whether (e^(-x/2+c))(x^3)/(3x-2)^2 is correct or not in 9(d) as the answer is (Ae^-x/2)(x^3)/(3x-2)^2

Thank you in advance!

I have put it as you did, hopefully it's right because I don't recall if they asked to show it using A constant, if we're wrong then we'll lose maximum 2 marks

Hopefully the raw mark for an A* would be lower than 110 but my guess it's 112 but HOPE NOT
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Reply 15

OP

Original post by PlayerBB

I have put it as you did, hopefully it's right because I don't recall if they asked to show it using A constant, if we're wrong then we'll lose maximum 2 marksHopefully the raw mark for an A* would be lower than 110 but my guess it's 112 but HOPE NOTPosted from TSR Mobile

Original post by baekintouch

Can anyone guess raw mark boundary of A* in C34?

I am also wondering whether (e^(-x/2+c))(x^3)/(3x-2)^2 is correct or not in 9(d) as the answer is (Ae^-x/2)(x^3)/(3x-2)^2

Thank you in advance!

Hello, both these answers are correct. e^(-x/2 +c) = e^(-x/2) x e^c are the same via the power rule. Since e^c is just some constant, we can say e^c = A , it just looks neater. So your answers are also correct, I can't imagine you losing marks for that.

(edited 8 years ago)

Reply 16