CfE Advanced Higher Mathematics 2017/2018 Watch

Consectatrix
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#61
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just wanted to say good luck to everyone for thursday
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jackdavidson1874
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#62
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Does anyone know if we are supposed to be able to do questions 15b) and c) on this paper, my teacher has never taught us it but have seen it on exams in the past https://www.sqa.org.uk/pastpapers/pa...cs_QP_2014.pdf
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username3509752
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#63
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(Original post by jackdavidson1874)
Does anyone know if we are supposed to be able to do questions 15b) and c) on this paper, my teacher has never taught us it but have seen it on exams in the past https://www.sqa.org.uk/pastpapers/pa...cs_QP_2014.pdf
I think it's just one of the problem solving type questions they throw in from time to time. I think I saw a similar question in some 2000-2003 paper as well.
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jackdavidson1874
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(Original post by Edgemaster)
I think it's just one of the problem solving type questions they throw in from time to time. I think I saw a similar question in some 2000-2003 paper as well.
Wasn't as bad as I thought it would be actually!
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Ethan100
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#65
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Do we need to know anything about the transformation of matrices? I don't understand it at all
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username3509752
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#66
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(Original post by Ethan100)
Do we need to know anything about the transformation of matrices? I don't understand it at all
do you have any examples of questions? We literally haven't been taught that at all
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Ethan100
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#67
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(Original post by Edgemaster)
do you have any examples of questions? We literally haven't been taught that at all
I actually don't. Was just looking through the formulae list and saw the transformation thing so I thought it was a big area in the course.
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username3509752
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#68
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(Original post by Ethan100)
I actually don't. Was just looking through the formulae list and saw the transformation thing so I thought it was a big area in the course.
Found this in the 2015 paper
https://puu.sh/AeNkJ/1fb4871019.png
And here's the marking scheme
https://puu.sh/AeNls/7afd3fc2fd.png
which unsurprisingly is pretty useless. I hope this doesn't come up in the exam.
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Labrador99
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#69
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Best of luck for tomorrow everyone! If you're still awake revising, make sure you get some sleep soon, and do your best in the exam tomorrow
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tomctutor
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#70
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TOMCTUTOR:
Just to say good luck tomorrow, try your best and answer every question if you can-
you will gain marks by trying!:facepalm:

Watch out for the Dragon!

\displaystyle \int_{}^{} {\frac{1}{ 1+x^2 }} .dx = tan^{-1}(x) + const.}
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tomctutor
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#71
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(Original post by Ethan100)
Do we need to know anything about the transformation of matrices? I don't understand it at all
Yes you need to know rotation, reflection scaling and inversion matrix in xy-plane,

e.g. \begin{pmatrix} cos(\theta) & -sin(\theta)  \\sin(\theta) & cos(\theta) \end{pmatrix}

is positive (anti-clockwise) rotation about the origin.
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Ethan100
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#72
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(Original post by tomctutor)
Yes you need to know rotation, reflection scaling and inversion matrix in xy-plane,

e.g. \begin{pmatrix} cos(\theta) & -sin(\theta) \\sin(\theta) & cos(\theta) \end{pmatrix}

is positive (anti-clockwise) rotation about the origin.
Thanks, I remember you from last year Do you think I left it late to try learn this?
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tomctutor
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#73
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If you look at the mi's to a few similar questions (even way back to 2002 and onwords) you might get
a hint for questions tomorrow!
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tomctutor
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#74
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(Original post by Ethan100)
I'm so not looking forward to it, so unprepared. Hopefully, the SQA are nice to us on Thursday.
Nice no! :devil:
\displaystyle \int_{}^{} {sin^2(x)cos^2(x)} .dx = ?}
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Ethan100
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#75
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(Original post by tomctutor)
Nice no!:devil:
\displaystyle \int_{}^{} {sin^2(x)cos^2(x)} .dx = ?}
Is that an integration by parts question :O
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tomctutor
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#76
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\displaystyle \int_{}^{}{\frac{1}{4}[2sin(x)cos(x)]^2}.dx = ?

\displaystyle \int_{}^{}{\frac{1}{4}sin^2(2x)}  .dx = ?

then maybe substitution with u=2x

then by parts etc..

When it comes to setting AHMaths questions I find the SQA very devious so beware
students!
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MONeill27
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#77
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oh dear, I don't know anything for this, like can't do the paper without looking at the mi, better be an easyish paper
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ferm4t
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#78
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#78
Best of luck tomorrow everyone
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tomctutor
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#79
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(Original post by MONeill27)
oh dear, I don't know anything for this, like can't do the paper without looking at the mi, better be an easyish paper
Good last minute revision strategy,
see how mi's relate to questions- seriously, given you should really be off to bed-bye's by now- try anyhow! Good luck.

Come back here after exam and maybe the Dragon will furnish us with worked answers (as he has done for last umpteen years).:couchpotato:
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ukdragon37
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#80
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(Original post by tomctutor)
Good last minute revision strategy,
see how mi's relate to questions- seriously, given you should really be off to bed-bye's by now- try anyhow! Good luck.

Come back here after exam and maybe the Dragon will furnish us with worked answers (as he has done for last umpteen years).:couchpotato:
Sorry I've been away most of the cycle this year I'm quite busy tomorrow and as you know I'm 5 hours of timezone behind but if someone posts the paper I will have a go at writing up the solutions, even if I have to do it overnight
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