[m1a1tank]

(Original post by sophie0106)
is there an unofficial mark scheme anywhere here?

right at the start on the first page

[Joshmeid]

(Original post by otrivine)
cause in the mark scheme for june 2011 mark scheme says f ( 1) 0 = with no sign or substitution*
errors and for conclusion.
?

It says f(-1) = 0 with no sign or substitution errors and for conclusion.

Meaning the A1 will be awarded if the substitution is correct and if a conclusion is present, the M1 will be awarded for just the substitution. You will receive 1 mark for that question.

[Putch1]

(Original post by otrivine)
even if you say =0?

yes im sure that you need to say 'therefore f(1) = 0' or something like that.


This was posted from The Student Room's iPhone/iPad App

[otrivine]

(Original post by Joshmeid)
It says f(-1) = 0 with no sign or substitution errors and for conclusion.

Meaning the A1 will be awarded if the substitution is correct and if a conclusion is present, the M1 will be awarded for just the substitution. You will receive 1 mark for that question.

even if i said = 0 ?yes cause i did sub ok then i showed that = 0
for example i did F(-2)=whatever the eq and sub = 0

[Putch1]

(Original post by Joshmeid)
Did you get all the 5 correct solutions? If your method is clearly written down such as:



Then you should be awarded the marks.

Yes i did get 5 solutions correct. My method was written like this. I just divided it straight away without giving 2x values

[Polo_0]

omg easiest paper every yet i made so many stupid mistakes
for the trig one (some how) i managed to get tan2x=5 and i worked out some answers from that... does anyone think ill get any marks for that? or will it just be a big fat zero marks?

[Brainstormer]

Do you think it matters for the differentiation question if i put the answer as 54.16 with recurring symbol? Cause thats still exact isn't it?

Also, on the integration question - i got the right answer using a different method where you subract y1 from y2 and then integrate. Its a method in the textbook and gets you the right answer. Do you think i will still get all 7 marks?

Thanks!

[Gmanscoop]

Hey, I genuinely found this paper easy, required that you learnt how to do everything that could come up. On question 8) I think I wrote down the Surface Area as: 2pix^2+4pixh, however I still got the correct answers (2.12). Also, for the trig equations question if I got to the point where you switch tanx to sinx/cosx but did not get any further right would that get 1 mark? thanks if any one can reply

[Joshmeid]

(Original post by rainbow1994)
...

4 or 5 out of 7, method and accuracy marks lost, expect 5, 4 if the mark scheme is strict.

[Prolite]

(Original post by Spellstheend)
For the trig question I missed 180 but got the rest, will I get 4/5?

Then in the sums proof I did it all correct but used 'S' instead of 'Sn' how many marks would that lose me?

I missed 180 too I think we lose 1 mark

[Joshmeid]

(Original post by Gmanscoop)
Hey, I genuinely found this paper easy, required that you learnt how to do everything that could come up. On question 8) I think I wrote down the Surface Area as: 2pix^2+4pixh, however I still got the correct answers (2.12). Also, for the trig equations question if I got to the point where you switch tanx to sinx/cosx but did not get any further right would that get 1 mark? thanks if any one can reply

8. b) It's a show that, you haven't shown it so you will lose 2 marks as you haven't shown the answer and you didn't substitute 'h' from part a.

6. a) You may get one mark as you used a trig identity although you only completed the first step and the method mark may be awarded for the whole working.

[Joshmeid]

(Original post by Brainstormer)
Do you think it matters for the differentiation question if i put the answer as 54.16 with recurring symbol? Cause thats still exact isn't it?

Also, on the integration question - i got the right answer using a different method where you subract y1 from y2 and then integrate. Its a method in the textbook and gets you the right answer. Do you think i will still get all 7 marks?

Thanks!

Differentiation: No, that will be fine.

Integration: Yes you will.

[Joshmeid]

(Original post by Putch1)
Yes i did get 5 solutions correct. My method was written like this. I just divided it straight away without giving 2x values

Interesting method, full marks as you've clearly shown how you got all the solutions, as the question asked.

[Putch1]

(Original post by Joshmeid)
Interesting method, full marks as you've clearly shown how you got all the solutions, as the question asked.

Thank you. =]


This was posted from The Student Room's iPhone/iPad App

[oli_G]

(Original post by Brainstormer)
Do you think it matters for the differentiation question if i put the answer as 54.16 with recurring symbol? Cause thats still exact isn't it?

Also, on the integration question - i got the right answer using a different method where you subract y1 from y2 and then integrate. Its a method in the textbook and gets you the right answer. Do you think i will still get all 7 marks?

Thanks!

About the integration one, yes you will definitely get the marks.

For the differentiation one, i'm not 100% sure, but as long as it is equivalent I can't see why they'd mark you wrong. You may lose accuracy mark?

[Hamburglar]

(Original post by Hamburglar)
Guys, on question 6 part b, where you have to prove the trig equation:

I understand that Tan x = Sin x / Cos x.

However, in my working I didn't actually showed this step, and instead multiplied both sides by Cos X. I jumped to the second step basically.

Will I lose any marks for this? Very annoying if I do, because otherwise I got full marks.

Can someone answer this please?

[Joshmeid]

(Original post by Polo_0)
omg easiest paper every yet i made so many stupid mistakes
for the trig one (some how) i managed to get tan2x=5 and i worked out some answers from that... does anyone think ill get any marks for that? or will it just be a big fat zero marks?

Unfortunately it will probably be 0 marks seeing as you won't get any correct solutions and the correct form was provided as a 'show that' in part a for which you could easily find solutions from.

[otrivine]

(Original post by oli_G)
About the integration one, yes you will definitely get the marks.

For the differentiation one, i'm not 100% sure, but as long as it is equivalent I can't see why they'd mark you wrong. You may lose accuracy mark?

for trig if you get the 2 values of cos=1/5 will you get 3 marks cause i think 2 marks is sinx=0 cause is more easier?

[Joshmeid]

(Original post by Hamburglar)
Guys, on question 6 part b, where you have to prove the trig equation:

I understand that Tan x = Sin x / Cos x.

However, in my working I didn't actually showed this step, and instead multiplied both sides by Cos X. I jumped to the second step basically.

Will I lose any marks for this? Very annoying if I do, because otherwise I got full marks.

You may lose a mark as you haven't clearly shown the trig identity (Tan x = Sin x / Cos x), although you multiplied through by cos x which suggests you do know the identity and have used it. This one depends on the examiners mood really..

[Metigue]

Damn, I made a lot of mistakes out of tiredness :/

On the logs question I just "separated" the bracketed log out, turned. 2 into 3^2 and solved a pretty nasty but incorrect quadratic..

For the circle question I used the cosine rule to calculate the perimeter of the segment not the sector.

For the long division of the cubic I divided fine, but then ignored the 2x^2 and factorised it as if it was 1

On the trig, although I wrote we needed to include the values for Sin2x = 0 I left them out..

:/ any rough estimates on the marks I'd lose?