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Review Maths P2 Higher
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12-06-2006 11:45am#1
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Q1: A and B were grand, couldnt do C but made good attempt.
Q2: Didint do
Q3: A and b were fine. Couldnt do Ci but Cii was easy.
Q4: Did very bad in this question overall. just guessed answers and didnt even understand the question in part C
Q5: Ai was fine (all in maths tables). the rest of A however was quite difficult and i dont remember seeing similar q's in past papers. B was very easy.
Q6: Just guessed answers for part A. Difference equation was easy but Bii I couldnt do. Just guessed C again.
Q7: A was easy, b was impossible and i was sure i knew how to do c and got right answer but it was different to the one given.
Q8: McLaurin was fine. Part B was fine. Ratio tests were ok apart from getting values of x.
OVERALL::( :mad:
:mad: :mad: :eek: 
:eek: :mad: 0 -
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Q1. Pretty easy. C ii) I didnt get
Q2. No clue for C, odd answers for B
Q3. Awful for me, but then I'm bad at line geometry anyway
Q6. Tricky parts, unsure how I did
Q7. Difficult. Didn't get C
Q9. A was trickier than usual. Didn't study Conditional Probability for b but half of it was pure logic and the rest I guessed well i think. C was easy-peasy.
Think C/high C over all, which is all I was aiming for really.
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This really irritated me. I studied for ages for this, specifically the weekend before, I studied a ridiculous amount, so I actually found it fairly easy without denying that there were some curveballs. In contrast paper 1 was actually fairly straightforward, but I studied SO much less for that. If I'd studied it as much as I did this I probably would've aced it. Oh well, here's how I took it:
1) a/b simple, c)i I accidently did a really long method (found that the y value of the intersecting point was imaginary) then did it the shorter way aswell. ii ran out of set time and went to q2
2)a/b simple again. c) scared me at first but got it pretty quickly. had forgotten what the circumcentre was
3)all simple, learned the angle formula last night thank god
4)a simple, b took a bit, but got it, c: thought I got it right then the second part proved my answer wrong... wait, just relooked at it, might be right. huh.
5)skipped at first out of "what the **** are they doing"ness, but handled it ok when I came back, ran out of time for a but b was a joke.
8)a/b worked out nicely. c I'm quite sure I got right, but my answers weren't reassuring
overall: I'm thinking low A or high B. doubtful of an A1 unless they marked it in my favour. With paper one (GRRR), probable B overall, just what I need. 0 -
The asymptotes were at y=90 degrees and y=-90 degrees cause Tan of those is infinite.ballyarse wrote:WHAT THE HELL WAS QUESTION 5 ABOUT i thought asmyptotes were only on paper one i'v never seen a question like that before so had to do two probability.....not good not good0 -
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Feral Mutant wrote:For 6ci, the probability that all the kids had the same birthday, did anyone get an answer of one over about seventy billion?
I got that... hope it's right.... thought it was a tough paper...
1. was grand... got part (c) worked out ten minutes before the end
2. was easy... I love the vector question
3. was easy
4. a+b were not to bad... however, struggled with part c and didn't get it at all...
5. (a) was an disaster and b was easy...
6. was easy as usual and 8. wasn't to bad
I was a little bit disappointed that only one proof came up.. it would have been so easy and gained u some easy marks... 0 -
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DiscoMouse wrote:What do you think you'd get for giving the answer in 5 C (i), (and it was right, as i deduced it from (ii)), but no workings?
Overall, shocking paper, broke my spirits with a sick little snap, and I've no heart for biology now.
Do you mean 4c1? There was no 5c!
I did that too sort of! I did part 2 first and then when I got r=k/square root of 3, I went back to 1 and figured out a way of getting that answer by making a triangle and 3 radii or something like that anyway!0 -
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ok, it went a lot better for me than Paper I (which I do believe I failed)
Q1 + 2 : Ignored both, simply could not get the circle question to work
Q 3: Forgot my proofs in (c)
Q 4: couldn't get (b)(ii), again forgot how to do it
Q 5: Found simple, got the graph, the asymptotes, and I guessed the (iv) part! But got it right!! Easiest question I've ever done
Q 6: Got everything but veryfying the second difference equation
Q 7:(c) in this was absolute ****. I'd no idea what was going on. Seemed yoiu had to apply a sequence formula to is
I'd say a C overall, just hope it'll rescue my Paper I from the fail..0 -
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I just want to check what other people got. I got:
1.(a) (x-1)sqrd+(y+1)sqrd=8
(b)(ii) p=0, p=-12/35
(c)(i)I substituted in x into S and found bsqrd-4ac less than 0, implies no real roots, implies K doesnt intersect S
(c)(ii) (2,1)
2.(a) 3i-j
(b)(i) pq= 6i-8j, pr=4i+3j
(ii) s= 7i-j
(iii) Angle=45 degrees
(c) got as far as dot product= length b sqrd - length of c sqrd. did you have to say that length b = length c, implies dot product= 0?
3.(b) q(8,0) , r(0,-12)
(c)(ii) Angle=54 degrees
4.(a) A= 60 or 300 degrees
(b)(i) 2Cos(2x+30)Sin(x+30)
(ii) x E (30, 120, 150, 330)
(c)(i) r=k/root3
(ii) Area Circle= Pi K sqrd/3, Area Sector= Pi k sqrd/6
5.(a) WTF!!
(iv) wrote nothing
(b)(i) 272m
(ii) 110,000m sqrd
8.(b)(i) a(0,2-4m) , b(4-2/m,0)
(ii) no time
(c)(i) -1/3 less than x less than 1/3
(ii) r= 1/4, no time to finish :mad:0 -
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joxer05 wrote:I just want to check what other people got. I got:
1.(a) (x-1)sqrd+(y+1)sqrd=8
(b)(ii) p=0, p=-12/35
(c)(i)I substituted in x into S and found bsqrd-4ac less than 0, implies no real roots, implies K doesnt intersect S
(c)(ii) (2,1)
2.(a) 3i-j
(b)(i) pq= 6i-8j, pr=4i+3j
(ii) s= 7i-j
(iii) Angle=45 degrees
(c) got as far as dot product= length b sqrd - length of c sqrd. did you have to say that length b = length c, implies dot product= 0?
3.(b) q(8,0) , r(0,-12)
(c)(ii) Angle=54 degrees
4.(a) A= 60 or 300 degrees
(b)(i) 2Cos(2x+30)Sin(x+30)
(ii) x E (30, 120, 150, 330)
(c)(i) r=k/root3
(ii) Area Circle= Pi K sqrd/3, Area Sector= Pi k sqrd/6
5.(a) WTF!!
(iv) wrote nothing
(b)(i) 272m
(ii) 110,000m sqrd
8.(b)(i) a(0,2-4m) , b(4-2/m,0)
(ii) no time
(c)(i) -1/3 less than x less than 1/3
(ii) r= 1/4, no time to finish :mad:
I got pretty much the same answers as you!
Except for part 1 if vectors, I have i-3j written on my exam paper....I just hope I wrote it correctly in my exam!! It would be such a stupid mistake to lose marks for!0 -
whassupp2 wrote:6ai- 165
6aii- dunno
6bi- Un= 3(1)/\n + 5(1/6)/\n
6ci- 1/729000000
6cii- 1/2.13
Can you explain how you got 1/729000000 (or (1/30) to the 6)?
I got (1/30) to the 5, reasoning being;
1 (the first day) x 1/30 x 1/30 x 1/30 x 1/30 x 1/30 x 1/30 (probability of each subsequent birthday being on the same day) x 30 (for each day of the month)
Seems right to me but it's niggling me since people got 1/729000000. If i'm wrong I think it's the x30 for each day of the month, although I seem to remember an example where you did the same thing. 0 -
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joxer05 wrote:I just want to check what other people got. I got:
1.(a) (x-1)sqrd+(y+1)sqrd=8 same as me, iirc
(b)(ii) p=0, p=-12/35 same as me, iirc
(c)(i)I substituted in x into S and found bsqrd-4ac less than 0, implies no real roots, implies K doesnt intersect S same as me, iirc
(c)(ii) (2,1) couldn't figure out
2.(a) 3i-j same as me, iirc
(b)(i) pq= 6i-8j, pr=4i+3j same as me, iirc
(ii) s= 7i-j same as me, iirc
(iii) Angle=45 degrees same as me, iirc
(c) got as far as dot product= length b sqrd - length of c sqrd. did you have to say that length b = length c, implies dot product= 0? I think I actually got that far, didn't realise b=c...hmm
3.(b) q(8,0) , r(0,-12) didn't do Q3
(c)(ii) Angle=54 degrees
4.(a) A= 60 or 300 degrees same as me, iirc
(b)(i) 2Cos(2x+30)Sin(x+30) same as me, iirc
(ii) x E (30, 120, 150, 330) ****ed this up
(c)(i) r=k/root3 same as me, iirc
(ii) Area Circle= Pi K sqrd/3, Area Sector= Pi k sqrd/6 same as me, iirc
5.(a) WTF!!Aye, me too. Think I got (i) and (ii) though
(iv) wrote nothing I wrote something clearly incorrect
(b)(i) 272m same as me, iirc
(ii) 110,000m sqrd can't remember really, but maybe
8.(b)(i) a(0,2-4m) , b(4-2/m,0) same as me, iirc
(ii) no time I think I got m=1/2
(c)(i) -1/3 less than x less than 1/3 same as me, iirc
(ii) r= 1/4, no time to finish :mad:yeah I got that and finished it off as for part (i)
That's me.0 -
joxer05 wrote:I just want to check what other people got. I got:
1.(a) (x-1)sqrd+(y+1)sqrd=8
(b)(ii) p=0, p=-12/35
(c)(i)I substituted in x into S and found bsqrd-4ac less than 0, implies no real roots, implies K doesnt intersect S
(c)(ii) (2,1)
2.(a) 3i-j
(b)(i) pq= 6i-8j, pr=4i+3j
(ii) s= 7i-j
(iii) Angle=45 degrees
(c) got as far as dot product= length b sqrd - length of c sqrd. did you have to say that length b = length c, implies dot product= 0?
3.(b) q(8,0) , r(0,-12)
(c)(ii) Angle=54 degrees
4.(a) A= 60 or 300 degrees
(b)(i) 2Cos(2x+30)Sin(x+30)
(ii) x E (30, 120, 150, 330)
(c)(i) r=k/root3
(ii) Area Circle= Pi K sqrd/3, Area Sector= Pi k sqrd/6
5.(a) WTF!!
(iv) wrote nothing
(b)(i) 272m
(ii) 110,000m sqrd
8.(b)(i) a(0,2-4m) , b(4-2/m,0)
(ii) no time
(c)(i) -1/3 less than x less than 1/3
(ii) r= 1/4, no time to finish :mad:
For the vectors part C
I just took "ah" as "h-a" which was "a+b+c-a"
And bc as "c-b"
giving me (b+c)(c-b)
Bc-cb
=00 -
DonaldDuck wrote:For the vectors part C
I just took "ah" as "h-a" which was "a+b+c-a"
And bc as "c-b"
giving me (b+c)(c-b)
Bc-cb
=0
Yeah same here, hadn't a clue when I looked at it first. I'm pretty sure that proves it but I can't understand why they would say it was the orthocentre when it isn't needed to prove the question... 0 -
Probably suppose to do it a more difficult wayCrimE wrote:Yeah same here, hadn't a clue when I looked at it first. I'm pretty sure that proves it but I can't understand why they would say it was the orthocentre when it isn't needed to prove the question...
For 3(b) I just took "2 to 0" =2 units,ratio = 3:! therefor 2+6= 8 giving me
(8,0) for first point,then "0 to -9" = -0 units,therefore -9-3=(0,-12) Im prtty sure it wasnt meant to be done that way0 -
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That paper was so tough.Enlil_Nick wrote:Can you explain how you got 1/729000000 (or (1/30) to the 6)?
I got (1/30) to the 5, reasoning being;
1 (the first day) x 1/30 x 1/30 x 1/30 x 1/30 x 1/30 x 1/30 (probability of each subsequent birthday being on the same day) x 30 (for each day of the month)
Seems right to me but it's niggling me since people got 1/729000000. If i'm wrong I think it's the x30 for each day of the month, although I seem to remember an example where you did the same thing.
For 6(c) would it be (1/30) to the power of 6 but then multiplied by 30!
(wish i thought of that in the exam)
What did anyone write for 5a(iv) the one about invTan(tank)=k0 -
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