Discussion and Suggested Solutions - Mathematics 2017

[Cecette]

They're not uploaded yet; Jamon is still in the process of writing and/or scanning them

OH RIGHT THAT MAKES SO MUCH SENSE thank you

[blasonduo]

What do you think the band 5 cut-off will be?

[malachiyoung]

When you thought it wasn't as difficult as previous years and the person providing the answers does... Seems I overestimated myself...

[mary123987]

DOES ANYONE ELSE FEEL OVERLY TIRED ? HONESTLY THE MORE I CHECK OR THINK BOUT THE ANSWERS THE MORE I FEEL LIKE CRAP  I FEEL REALLY DOWN 
PERSONALLY I DONT THINK IT WAS THAT HARD BUT IT WAS ALOT TO DO IN THE 3 HOURS idk i think i went okay

[Anything]

DOES ANYONE ELSE FEEL OVERLY TIRED ? HONESTLY THE MORE I CHECK OR THINK BOUT THE ANSWERS THE MORE I FEEL LIKE CRAP  I FEEL REALLY DOWN 
PERSONALLY I DONT THINK IT WAS THAT HARD BUT IT WAS ALOT TO DO IN THE 3 HOURS idk i think i went okay

The test is done I'm sure you gave it your best shot, there's no point worrying about what has already been completed but instead focus on peaking for the rest of your exams

[janemurray]

I do anticipate that there will be heavier alignment since a lot of candidates found it hard. If it's usually 85 or so then 83 this year is probably a fair call

Sorry this is probably a stupid question but how do the bands work? I thought the band 6 cut off was 90? and band 5 was 80 etc.

[mary123987]

 

The test is done I'm sure you gave it your best shot, there's no point worrying about what has already been completed but instead focus on peaking for the rest of your exams

Definitely agree man !!! It is what it is hopefully i smash the rest !!

[doyouevencheeto]

Sorry this is probably a stupid question but how do the bands work? I thought the band 6 cut off was 90? and band 5 was 80 etc.

Yes you are correct however I believe there is a discrepancy in your understanding of what the others are talking about. The marks you receive on the 15th December (I think it's 15th) is your aligned mark (if you get a 90+ aligned mark, you get a b6). This is different to your raw mark (the actual mark you get /100). Once NESA have marked all exams, if they believe the exam was too hard, they'll align it accordingly so that the final mark is fair. Hope this helps!

http://rawmarks.info/wiki/Mathematics
Have a look at this btw, it'll help you understand it more

[sajochi]

Sorry this is probably a stupid question but how do the bands work? I thought the band 6 cut off was 90? and band 5 was 80 etc.

They're the aligned cut-offs yes... But dependent on how everyone performs within your cohort, raw marks are 'aligned' either up or down to best produce a bell curve. Hence a raw mark of around 85 often is aligned upward above 90 and you receive a band 6.

[inescelic]

The AP and GP question using simultaneous questions... clever but cheeky nesa

[taylorlucy]

An insignificant mistake but in 12b) the volume needs a pi in it. Thanks for the solutions Jamon!

[dannimoussa]

For the dl/dx question i used cosaplha and cosbeta to find x, would that be okay?
Also, for last a part of question 11, did they also ask for range? i thought it was just domain

[jamonwindeyer]

An insignificant mistake but in 12b) the volume needs a pi in it. Thanks for the solutions Jamon!

Thank you for the spot! Will fix that!

As implied, first draft is up!! Keen to have lots of mistakes fixed - I've also put some of my thoughts on the exam in the OP

[ang3244]

For 16ci, did anyone else use "line joining the midpoints of two sides of a triangle is parallel to and equal to half of the third side?" i didn't need to prove similarity and im worried that my proof isn't valid as a result???
D;

[Guss123]

Looks like i got 90 raw. Fuck made some stupid mistakes....(((((