Math Ext 1 Predictions/Thoughts (2 Viewers)

[Jojofelyx]

there are 5 perms and combs qs in this years hsc, prove that at least 2 of these questions must be within the same section (q11-14)

Just me or does anyone else hear pigeons.... -_-
But in all fairness, that would be pretty meta from NESA if they were to put in a question like that. Id be welcoming of such a thing if it were the case. Just dont gimme a repeat 2020

 

[stupidpersonlol]

I think theres gonna be a bunch of binomial distribution and vectors this year and a hard differential equation. i personally dont mind combinations/permutations lol

 

[icycledough]

I think they might ask a few P&C questions, just because in last year's exam, there was 1 true P&C question (a multiple choice question), so that may benefit some students while it could also be disadvantageous for other students.

 

[luminol]

i just kinda hope there isn't too much focus on combinatorial proofs, since the syllabus is really unclear about what they can ask on it ahaha

 

[stupidpersonlol]

i just kinda hope there isn't too much focus on combinatorial proofs, since the syllabus is really unclear about what they can ask on it ahaha

EWWW those suck

 

[liv888]

i just kinda hope there isn't too much focus on combinatorial proofs, since the syllabus is really unclear about what they can ask on it ahaha

same, hope there isn't much focus on probability and combinations cause I really neglected it HAHA

 

[Jojofelyx]

same, hope there isn't much focus on probability and combinations cause I really neglected it HAHA

ay man, why'd you have to say that? Now its 100% gonna be in the exam today :\

 

[hatterene]

today's gonna be violent ngl

 

[Siwel]

today's gonna be violent ngl

dont say this, just hope for some trig/calc/vectors

 

[Jojofelyx]

dont say this, just hope for some trig/calc/vectors

surely they wont have adv + x2 relatively more difficult, AND have x1 that way, surely not....

 

[Siwel]

surely they wont have adv + x2 relatively more difficult, AND have x1 that way, surely not....

unsure just hope there isnt any adv stats in there, havent really looked at that much

 

[hatterene]

is it likely there's simple harmonics

 

[icycledough]

unsure just hope there isnt any adv stats in there, havent really looked at that much

If like last year (although that isn't the best way to look at it), there were only 3 marks of advanced stats questions, although quite simple questions (like finding the expected value, standard deviation and probability between 2 values).

 

[icycledough]

is it likely there's simple harmonics

I believe simple harmonic motion has been moved from Extension 1 to Extension 2.

 

[hatterene]

true but i run into some stray simple harmoic questions in the Cambridge textbook + past papers so like i just learnt the basics and hoped for the best

 

[icycledough]

true but i run into some stray simple harmoic questions in the Cambridge textbook + past papers so like i just learnt the basics and hoped for the best

I can assure you that it won't be assessed in the Extension 1 exam. They have now moved it to Motion in the Extension 2 syllabus (which also has resisted and unresisted motion and projectile motion).

(Page 41 in the below document)

 

[luminol]

is it likely there's simple harmonics

I think they can test some trig transformations (auxiliary angle) and real life problems which is sometimes done in SHM but you don't need to know anything about its motion equations e.g. rising tides with a given trig equation

 

[Jojofelyx]

Anyone got any last minute inverse functions tips/tricks, that shit is quite annoying ngl

 

[icycledough]

Anyone got any last minute inverse functions tips/tricks, that shit is quite annoying ngl

Make sure you restrict the domain so it is a one-to-one function (which can be tested using the horizontal line test)

When graphing, make sure the inverse is a reflection over the line y = x (so x values swap with y values)

Also for graphing, domain and range switches

 

[5uckerberg]

Just me or does anyone else hear pigeons.... -_-
But in all fairness, that would be pretty meta from NESA if they were to put in a question like that. Id be welcoming of such a thing if it were the case. Just dont gimme a repeat 2020

Pigeonhole principle