Maths Ext 2 Predictions (4 Viewers)

[tywebb]

i made a slightly easier one


good?

 

[tywebb]

now i bet you think this generalisation of triangle inequality has nothing whatsoever to do with this exam right?


however .............

15aiii said or otherwise and so here is the "or otherwise" method using generalised triangle inequality!

 

[tywebb]

here is or otherwise method for 12cii

 

[tywebb]

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



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.

 

[nonya2000]

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.

can you make the cut off mark for math advanced this year 75 please