Maths Ext 2 Predictions (1 Viewer)

[appleali]

on EVERYBODY'S SOUL there will be fallacious proofs today

 

[one eight seven]

Actually, the word "plane" is used everywhere in HSC Maths e.g. "complex plane", "x-y plane" or "inclined plane". It's even in one of the vector topic dot points:
View attachment 45037
Seems pretty obvious that students are expected to know what the word "plane" actually means.

Even if they don't explicitly use the word "plane" there is no reason why they can't just synonymously label it as a region or a set of points in the number space that satisfies a set of conditions.

What I mean in my earlier post is that there is nothing stopping them technically asking something like this:
View attachment 45039

If we honestly think they can't use the word "plane", then what's stopping them replacing the word "plane P" with "region R" or "a set of points P"?

The point is that students can answer this question with the tools they have within the syllabus and it doesn't require knowledge outside the syllabus (i.e. notice it's not asking you to recall the equation of a plane). All you need to do is compute the dot product of two perpendicular vectors (with a bit of work to figure out what those vectors are) to derive the result. This is simply an "application" of something in the syllabus to explore something unfamilar.

If you want to dismiss this as being "outside of syllabus", then you do so at your own risk. The HSC exams have time and time again proven otherwise throughout history because they can sneakily lean on this "application" side of the syllabus (which is why Ext2 has this reputation for being so challenging in the first place).

I emailed NESA about this a while ago and they explicitly said "The equation of a plane is not part of syllabus content however students need to have a conceptual understanding of the nature of a plane." and provided the exact same dot point that you provided.

But I think NESA most likely won't ask this anyway, because while some students may be able to guess the procedure here, students don't really know what they're dealing with when they see an equation such as x-z=1. How would they know that this procedure correctly maps all the points on the plane to that Cartesian equation, or whether the plane is possibly a subset of that Cartesian equation or vice versa? And what exactly is the meaning of something like x-z=1 for somebody that has not studied planes besides simply using the result algebraically?

I think NESA would be more creative and would prefer to write something that wouldn't provide a significant advantage to particular students, such as those who have studied and understand the Cartesian equation of a plane. Similar to how proponents of learning the cross product have not been able to actually use it in any exam.

 

[C2H6O]

gl everyone lock tf in it’s maths season babbyyy

 

[Allan Mekisic]

I think there will be a difficult mechanics pulley or pendulum question in 15 or 16

 

[OD6]

Just over 3hrs to go, still time for one last paper

I think there will be a difficult mechanics pulley or pendulum question in 15 or 16

I hope not thats like my worst bit in the whole course

 

[Edward34245]

Just over 3hrs to go, still time for one last paper

I hope not thats like my worst bit in the whole course

bad idea to do one last paper now. Just chill til the exam

 

[OD6]

bad idea to do one last paper now. Just chill til the exam

yeah i know im not actually doing one

 

[Allan Mekisic]

Just chill

 

[appleali]

guys if you didn’t do 2 papers this morning you will fail the exam

 

[Allan Mekisic]

I’m going to do Q 11 to 14 first and then make a decision what to do next. Starting with MCQs is not a good idea. Usually get bogged down on Q7 to 10.

 

[OD6]

my philosophy is start with mult choice but only the ones that are easy and don't really need much working out. Basically free marks to get started, but the harder ones are often a fair bit of work for 1 mark so i think ill leave them to later or just guess at the end depending on time

 

[OD6]

Good luck everyone. like i hope you fail to boost the scaling, but still good luck

 

[tywebb]

paper

 

[4u Boy]

Yo lowk, not that bad. Definitely easier than 2023

 

[synthesisFR]

paper

lmao

 

[Allan Mekisic]

Harder than 2021. Easier than 2022 and 2023

 

[Allan Mekisic]

Last mechanics projectile required same technique as the one in 2022

 

[tywebb]

some dudes were saying Q8 is oos.

is it?

does it even matter?

 

[tywebb]

they put a beta function in again.

some will go oh no no no beta functions are oos.

well then why tf do they keep putting them in the exams? they've been doing it since 1945! They'll never stop.

 

[K1uggie]

paper

DAM you work fast