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SOLUTIONS - HIGHER 2005 - HSN forum

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SOLUTIONS - HIGHER 2005


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#1 Mr H

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Posted 22 May 2005 - 05:56 PM

Hopefully no typos. Let me know if you find any or want a question clarified.

Hit the Invergordon Academy link below.

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#2 FcukWIT

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Posted 22 May 2005 - 06:07 PM

PHEW. To my surprise i did much better in this paper than i expected. According to my marking i might get about 81 -84 % overall.
But i still feel like kicking myself for messing up paper1 so bad.

thx for the answers

#3 SomethingTypical

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Posted 22 May 2005 - 06:28 PM

By my marking I got 67%, give or take a few marks. Which gives me about 53% overall, hopefully a pass.

#4 Pooch

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Posted 22 May 2005 - 06:37 PM

I got about 90% in that paper. Unfortunately I made some idiotic mistakes in P1. Still hopeful for an A though biggrin.gif

#5 zaim187

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Posted 22 May 2005 - 06:37 PM

i was just wondering if in question 8C u dont diffrentiate but jus substitute the X values in would u lose all 5 marks or maybe gain a few?

#6 tupacshakur

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Posted 22 May 2005 - 06:38 PM

QUOTE(zaim187 @ May 22 2005, 06:37 PM)
i was just wondering if in question 8C u dont diffrentiate but jus substitute the X values in would u lose all 5 marks or maybe gain a few?

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yeah i did that aswell

i substituted in all values from -2 to 2 into x

is that wrong, can i get a few marks.

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#7 zaim187

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Posted 22 May 2005 - 06:40 PM

yeh man i did the exact same thing. i don't think we should lose all 5 marks but u neva kno with these damn markers n marking schemes.

#8 HatingHighers

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Posted 22 May 2005 - 08:06 PM

See for the last question in paper 2, is it ok to just put -1 into the equation and if it comes to zero, say it's a solution, and then introduce the synthetic division and stuff in the second part of the question?

I got the right answer for the last question so I'm really hoping they don't dock me 7 marks just because I did the first part a different way... huh.gif

Thanks for doing these by the way! I wish teachers in other subjects would put up solutions as well!

#9 CutieBum

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Posted 22 May 2005 - 08:20 PM

For question 3a, P2...

I got the correct proof but in your answer you worked out the midpoint of AB and used that as the point to sub into the equation whereas I simply used A(1,0). Will I lose any marks for this? dry.gif

#10 CutieBum

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Posted 22 May 2005 - 08:23 PM

Infact, ignore my last statement. I must have worked out midpoint 'cause I deffo. got the proof and just tried to work through it there using A and couldn't.

#11 coca

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Posted 22 May 2005 - 08:27 PM

Thanks Mr H! Excellent work!
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#12 Mr H

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Posted 22 May 2005 - 09:47 PM

QUOTE(zaim187 @ May 22 2005, 06:37 PM)
i was just wondering if in question 8C u dont diffrentiate but jus substitute the X values in would u lose all 5 marks or maybe gain a few?

View Post

I can't be certain but I would imagine that you would get some marks for subbing the end points, -2 and 2, but full marks would need max/min values checked out too.


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#13 Mr H

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Posted 22 May 2005 - 09:58 PM

QUOTE(HatingHighers @ May 22 2005, 08:06 PM)
See for the last question in paper 2, is it ok to just put -1 into the equation and if it comes to zero, say it's a solution, and then introduce the synthetic division and stuff in the second part of the question?

I got the right answer for the last question so I'm really hoping they don't dock me 7 marks just because I did the first part a different way... huh.gif

Thanks for doing these by the way! I wish teachers in other subjects would put up solutions as well!

View Post

I would accept that. I'm not a marker but I'm sure that would be OK too. There are often other ways to solve some questions, I just quickly did the first way that came to me and the way that my pupils and I would have done it in class.

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#14 YIC

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Posted 23 May 2005 - 11:37 AM

I am too scared to look at the answers crying.gif I do not want to get my envelope on August 9th and know I have done badly, even though I think I could get an A.

#15 tupacshakur

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Posted 23 May 2005 - 11:47 AM

QUOTE(YIC @ May 23 2005, 11:37 AM)
I am too scared to look at the answers  crying.gif I do not want to get my envelope on August 9th and know I have done badly, even though I think I could get an A.

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isnt it 10th of August wink.gif
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#16 YIC

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Posted 23 May 2005 - 12:27 PM

it is the 9th I am sure

#17 tupacshakur

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Posted 23 May 2005 - 01:56 PM

oh yeah i think ur right lol
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#18 YIC

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Posted 24 May 2005 - 11:46 AM

In the very last question of paper 2 (the part b), could someone qualified (e.g Mr H) please tell me how many mrks I would roughly get for this. Much of what I have said has been rubbish but I want to know if I could any marks. Much appreciated smile.gif

- I done synthetic division using x = -1 in order to get an expression with many P's as being the remainder.
- I stated that since (x+1) is factor the remainder = 0.
- From this I worked out the value of p (I think it was 1 or something)
- I then substituted this p=1 into the original equation to get the proper cubic equation (with no P's left)
- Using synthetic division (i.e factorising using the table) I took x=-1 as a factor and then factorised the equation to get a qaudratic
- I made this quadratic equal to 0 and worked out that the only root was x = -1, and then I said that this occurred when p = 1 (since that is what I had originally substitiuted into the equation)

#19 tupacshakur

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Posted 24 May 2005 - 12:55 PM

QUOTE(YIC @ May 24 2005, 11:46 AM)
In the very last question of paper 2 (the part b), could someone qualified (e.g Mr H) please tell me how many mrks I would roughly get for this. Much of what I have said has been rubbish but I want to know if I could any marks. Much appreciated smile.gif

- I done synthetic division using x = -1 in order to get an expression with many P's as being the remainder.
- I stated that since (x+1) is  factor the remainder = 0.
- From this I worked out the value of p (I think it was 1 or something)
- I then substituted this p=1 into the original equation to get the proper cubic equation (with no P's left)
- Using synthetic division (i.e factorising using the table) I took x=-1 as a factor and then factorised the equation to get a qaudratic
- I made this quadratic equal to 0 and worked out that the only root was x = -1, and then I said that this occurred when p = 1 (since that is what I had originally substitiuted into the equation)

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what the? all you needed to do is use the discriminint but u might get marks for that none the less.
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#20 chocolate limes

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Posted 24 May 2005 - 01:38 PM

well i can safely say that i failed maths this year!!! blink.gif
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