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SOLUTIONS - Higher 2005 Paper 1 - HSN forum

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SOLUTIONS - Higher 2005 Paper 1


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#1 Mr H

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Posted 21 May 2005 - 12:22 AM

A late night Friday first draft available here: http://www.invergordon.highland.sch.uk/dep...maths/index.htm

Please let me know if there are any typos/daft mistakes. (It was very late!)

H tends 2 infinity

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#2 tupacshakur

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Posted 21 May 2005 - 12:26 AM

im too nervous to look!!!

whens paper 2 solutions gonna be up?
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#3 YIC

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Posted 21 May 2005 - 08:12 AM

Nooo. I don't want to look at them!! I will be too frightened. Maybe people that are more confident will find it easy to see the solutions. Not me. I don't think I have done bad, but I just don't want to take a risk and find out too early that I have made mistakes laugh.gif

#4 tupacshakur

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Posted 21 May 2005 - 08:51 AM

even if you get the answer wrong, your bound to get some marks for working.
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#5 YIC

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Posted 21 May 2005 - 08:55 AM

I know,but i just the way I am.

#6 tupacshakur

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Posted 21 May 2005 - 08:58 AM

like for the angle/vectors one i got 36.9 degrees

but im sure i will get some marks for the working and not just 0
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#7 gary

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Posted 21 May 2005 - 10:35 AM

The ratio for Q.3 was 2:1 not 2:3.

#8 YIC

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Posted 21 May 2005 - 10:47 AM

Is there a mistake in the solutions?

#9 dfx

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Posted 21 May 2005 - 10:55 AM

Seems fine to me. Thanks so much! I also realized I've made totally silly inexcusable mistakes, like using the integral of sine when it was differentiation mad.gif . But since I used the long process using the chain rule, I'm hoping for a mark or 2. Also countin on lots of follow through marks. Few reli stupid mistakes - my teacher was right about exam pressure. Anyway, with paper 1 only I'm hoping for near 75% per se... *fingers crossed* .

#10 tupacshakur

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Posted 21 May 2005 - 11:06 AM

do u still get marks for doing a second part of a question, even if you got the first part wrong (which u have to use in the 2nd part)

I heard its called carried error and you can still pick up marks in the second part.

Is this true?
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#11 Equilibrium

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Posted 21 May 2005 - 11:09 AM

yup double jepordy rolleyes.gif
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#12 dfx

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Posted 21 May 2005 - 11:23 AM

Yeah, its called consequential marking. Long live consequential marking! Obviously you'd lose a mark or two towards the end for wrong answers. But the working which carries 90% of the marks would get rewarded... i ASSUME.

#13 YIC

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Posted 21 May 2005 - 11:38 AM

I made up the point for the coordianates of the centre of the circle (3c in paper 2) in part i) as being 2,3 or (something) but I carried this forward to the second part and worked out the formula. Would I get 2 marks for the second bit?

#14 Discogirl17

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Posted 21 May 2005 - 11:41 AM

You would get at least a mark for the 2nd bit as you did do it but u wouldnt get the mark for the orginal point or the mark for the final answer.
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#15 tupacshakur

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Posted 21 May 2005 - 11:45 AM

yeah thats what i did. I said take the centre as (5,4) then i worked it out so i get atleast 1 mark.
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#16 Discogirl17

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Posted 21 May 2005 - 11:46 AM

RAW is WAR? thats mad man, thats mad. Did you go see it in Edinburgh?
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#17 AmAnDa

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Posted 21 May 2005 - 12:16 PM

I thought I done really bad in paper 1 but after looking at those answers I maybe done ok. The thing I like about maths is even if u get the wrong answer you can still get lots of marks!! lol! tongue.gif

People that are nervous to look, there's no point. There is no way at all you can change your answers now, so just look. You should all be happy that you completed the course! biggrin.gif


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#18 AmAnDa

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Posted 21 May 2005 - 12:20 PM

QUOTE(YIC @ May 21 2005, 12:38 PM)
I made up the point for the coordianates of the centre of the circle (3c in paper 2) in part i) as being 2,3 or (something) but I carried this forward to the second part and worked out the formula. Would I get 2 marks for the second bit?

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I made that point up as well. How were you meant to work out the centre anyway? I just couldn't work it out. lol. I done the same as you, just said "if the centre was (2,3) then the equation would be ......"

hopefull we'll still get at least a mark!!

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#19 tupacshakur

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Posted 21 May 2005 - 12:21 PM

QUOTE(Discogirl17 @ May 21 2005, 11:46 AM)
RAW is WAR? thats mad man, thats mad. Did you go see it in Edinburgh?

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yup and im going to the glasgow wwe show in june biggrin.gif
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#20 dfx

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Posted 21 May 2005 - 12:28 PM

I worked out the centre using simultaneous equations. You know the gradient for the radius and two given points along the line. You also know the graident of the perp. bisector and two given points on the line. Just plug in the points in the gradient formula (y2-y1/x2-x1) and then solve simultaneously.

I'm sure there must be a far more obvious way because the entire question INCLUDING the eqn of the cirlce (which requires you to use the distance formula to calculate the radius) is JUST 4 marks. And the simultaneious eqns method took around half a page or so...





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