Suggested Answers to the HSC 2016 Mathematics Exam (+Discussion!)

[pikachu975]

I just took the integral disregarding the absolute value lol

Yeah I don't get why this didn't work to be honest.
Edit: Nvm

[kb123]

Ahhhh clever clever!!

Basically the area in that section yields a negative, but we don't want that! So we just take the same thing, but positive

Oh ok...

[bohimei]

How would a raw 90 scale this year you guys reckon?

[MysteryMarker]

Your version is correct as well! They'd accept both.

Did you sum 'n' terms, or 'n-1' terms? It's supposed to be 'n-1', I made the mistake too

Why is it 'n-1' terms? Sorry, just really curious as to how i didn't see this.

[wesadora]

Why is it 'n-1' terms? Sorry, just really curious as to how i didn't see this.

bruh... I made that mistake. because you worked out in part one for FOUR rounds, and proved that it was a series with THREE terms.

therefore for n rounds, there are n-1 terms.

[wesadora]

How would a raw 90 scale this year you guys reckon?

probably 93-94... not much of a difference 90+ and above raws

[$Billi$]

other than the probability question (n-1) I've got everything right! so 99 raw mark  I hope extension 1 is as easy as this

[SaeedAyman]

How much do you guys think a raw mark of 86 will go up to considering my school will have atleast 3 people with 98+? Rank is really good too (rank 6)? Is there a chance for a 90 or higher?

[$Billi$]

How much do you guys think a raw mark of 86 will go up to considering my school will have atleast 3 people with 98+? Rank is really good too (rank 6)? Is there a chance for a 90 or higher?

 around 89 or 90 if you're lucky

[fizzy.123]

Do you lose marks for not righting the units, e.g. units^2 or units^3 for volume?

[jamonwindeyer]

How much do you guys think a raw mark of 86 will go up to considering my school will have atleast 3 people with 98+? Rank is really good too (rank 6)? Is there a chance for a 90 or higher?

None of those things impact the way your raw mark is handled; your HSC mark is you and just you. That said I reckon you should crack 90 with a raw mark like that

[jamonwindeyer]

Do you lose marks for not righting the units, e.g. units^2 or units^3 for volume?

Ehhh, probably not if you've done everything else right, but I'm not 100% sure there

[jamonwindeyer]

other than the probability question (n-1) I've got everything right! so 99 raw mark  I hope extension 1 is as easy as this

Great work! Although I wouldn't say this was"easy", I reckon you are just super good at Math

[dazatoN]

For 13 ii, if you correctly labelled all the points but drew the graph without showing how a horizontal point of inflexion looks, would u lose a mark?
also, for 15a, if the limits were wrong when integrating and you - instead of +, how many marks do you reckon il lose?

[jamonwindeyer]

For 13 ii, if you correctly labelled all the points but drew the graph without showing how a horizontal point of inflexion looks, would u lose a mark?
also, for 15a, if the limits were wrong when integrating and you - instead of +, how many marks do you reckon il lose?

f you indicated it as a horizontal inflexion in the previous part, and you showed the correct gradient pattern on the graph, you'd be all set it doesn't have to be super pronounced a little error like that would lose a single mark!