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Maths Ext 2 Predictions (1 Viewer)
- Thread starter appleali
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so that just leaves for ext. 2 the or otherwise method for the 11eii
an obvious way would be binomial expansion method
u dunno the marking criteria during exam, but u do know it 2 mark
they say "obtains correct number in modulus-argument form, or equivalent merit" for 1 mark
not clear here if the binomial expansion would constitute equivalent merit, but that may be made clearer in next years nesa presentation which occurs on or about the last saturday of february
if one proceeds with this we get
^7=\sqrt3^7+7\sqrt3^6i+21\sqrt3^5i^2+35\sqrt3^4i^3+35\sqrt3^3i^4+21\sqrt3^2i^5+7\sqrt3i^6+i^7=-64\sqrt3-64i)
but more controvesially some calculators can do the complex numbers so what if one proceeds with this:
^7=-64\sqrt3-64i)
do that get the 2 mark? nesa allow calculator, so should they really penalise for using it to get answer?
one may argue it don't show any understanding other than how to press buttons on calculator so don't deserve 2 mark.
on the other hand it does show ability to use whatever technology is available to get answer and use of technology is in syllabus, and so should get the 2 mark.
an obvious way would be binomial expansion method
u dunno the marking criteria during exam, but u do know it 2 mark
they say "obtains correct number in modulus-argument form, or equivalent merit" for 1 mark
not clear here if the binomial expansion would constitute equivalent merit, but that may be made clearer in next years nesa presentation which occurs on or about the last saturday of february
if one proceeds with this we get
but more controvesially some calculators can do the complex numbers so what if one proceeds with this:
do that get the 2 mark? nesa allow calculator, so should they really penalise for using it to get answer?
one may argue it don't show any understanding other than how to press buttons on calculator so don't deserve 2 mark.
on the other hand it does show ability to use whatever technology is available to get answer and use of technology is in syllabus, and so should get the 2 mark.
it also a question of equity. rich kids with all the wiz-bang expensive technology getting answer in a millisecond thereby giving time-advantage to the rich kids, and poorer kids with cheaper calculator that don't do complex number have to do it longer way, losing valuable time in exam.
there is a bit of controversy about 13b now.
here solution:
controversy stems from comments in textbooks the cambridge and steve howard books say something to the effect that
^2)\text{ needs to be derived each time})
so u notice in above solution the derivation not given.
there are several solutions on the net now, some with derivation, some without
in 2021 there is a question like this and even nesa's solution to that did not give derivation
furthermore syllabus say "use relevant formulae and graphs to solve problems involving simple harmonic motion"
it don't say derive and use, it just say use
so if we go with the cambridge/steve howard narrative it lose mark
but if we follow what syllabus say it don't lose mark
here solution:
controversy stems from comments in textbooks the cambridge and steve howard books say something to the effect that
so u notice in above solution the derivation not given.
there are several solutions on the net now, some with derivation, some without
in 2021 there is a question like this and even nesa's solution to that did not give derivation
furthermore syllabus say "use relevant formulae and graphs to solve problems involving simple harmonic motion"
it don't say derive and use, it just say use
so if we go with the cambridge/steve howard narrative it lose mark
but if we follow what syllabus say it don't lose mark
next year at uts (not sure which lecture theatre yet, but probably the guthrie theatre) nesa are doing presentations on the marking of the maths hsc exams 2024.
it goes from 9am-4:15pm on Feb 22, 2025.
if you want to go, i’ll confirm later the lecture theatre.
but i might not go. the last 2 years they made recordings and slides available online. dunno if they do that again, but they probably will.
it goes from 9am-4:15pm on Feb 22, 2025.
if you want to go, i’ll confirm later the lecture theatre.
but i might not go. the last 2 years they made recordings and slides available online. dunno if they do that again, but they probably will.
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apex tutoring solutions: https://www.apextutoring.com.au/worked-solutions-to-the-2023-hsc-mathematics-extension-2-exam-2/
there are also links there to the apex tutoring solutions for ext 1, adv, std 2 and std 1 exams
there are also links there to the apex tutoring solutions for ext 1, adv, std 2 and std 1 exams
matrix education solutions: https://www.matrix.edu.au/2024-hsc-maths-extension-2-exam-paper-solutions/
EDIT: link not working anymore
EDIT: link not working anymore
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can you make the cut off mark for math advanced this year 75 please
it's up again. new link: https://www.matrix.edu.au/2024-hsc-maths-extension-2-exam-solutions/