Maths Extension 1 Predictions/Thoughts (3 Viewers)

[igor9]

you got worked solu

you got worked solutions for this?

nah the answers don't have it unfortunately, just search up 2002 mx1 hsc it's not there

 

[mohitmo]

is 2022 or 2023 the hardest new syllabus paper?

2022

 

[askit]

As someone who did the e1 hsc last year, don't place too much emphasis on the previous years testing - everyone was weary of another large sample proportion question but we got hit with a nasty vector proof - also look at areas which NESA hasn't tested as much since theres a high likelihood their pop up this year - gud luck

 

[Hejjwheh23]

As someone who did the e1 hsc last year, don't place too much emphasis on the previous years testing - everyone was weary of another large sample proportion question but we got hit with a nasty vector proof - also look at areas which NESA hasn't tested as much since theres a high likelihood their pop up this year - gud luck

So do you know of any areas that nesa hasn't tested a lot?

 

[Herbs!]

So do you know of any areas that nesa hasn't tested a lot?

im predicting theres gonna be a pidgeon hole q cause its being removed from the new ex 1 syllabus and they may want to test us on it before it leaves. same with t formula but theyd be the easier questions.

 

[zackbekro123]

How do you find domain and range of inverse trig graphs within a trig graph e.g. cos inverse (tanx) or sin(tan inverse x)

 

[K1uggie]

How do you find domain and range of inverse trig graphs within a trig graph e.g. cos inverse (tanx) or sin(tan inverse x)

Find the range of the inner function and then apply it to the domain of the outer function

 

[C2H6O]

How do you find domain and range of inverse trig graphs within a trig graph e.g. cos inverse (tanx) or sin(tan inverse x)

Firstly know the range of the 'outside' function. for your first example the range of cos^-1 is 0<y<pi. the overall function cos^-1(tanx) can only be defined in this range.

Secondly look at the domain of the 'outside' function, which is -1<x<1. Compare this to the range of the 'inside' function, in this case tanx which is defined for all real y. Now know that cos^-1 will only take in numbers between -1 and 1 as input, so the overall function will only be defined where tanx (the 'input') is between -1 and 1 which we know is between the multiples of pi/4

Just to do your second example, sin is defined for all real x, and y between -1 and 1. tan^-1 all real x and y between -pi/2 and pi/2.
the overall function will have the same range as sin (-1<y<1), and the domain will be defined where x is real (bc numbers between -pi/2 and pi/2 are real)

 

[Hejjwheh23]

How do you find domain and range of inverse trig graphs within a trig graph e.g. cos inverse (tanx) or sin(tan inverse x)

Check out this vid from Hok's Tutoring on youtube:


Domain and Range of Composite Functions - Circular Functions

 

[hjsml]

What are hard 3U trials to do for practise? I've done the hsc ones already.

NSB 2022 should be illegal

 

[shoulfer]

NSB 2022 should be illegal

I did it today its not that bad besides part 3 of that one question with the circle and t , t1, t2 stuff. and I didn't spot the sine rule on part 2 of the final proj mot rest of it is pretty standard stuff

 

[afourgridbook]

nesa hasnt really tested on forces or binomial proofs yet right?

 

[RancidMathematician123]

who told you this is 2024 paper?

Ignore the bloke it is a question on the NESA sample paper lmao

 

[realjohnpork]

nesa hasnt really tested on forces or binomial proofs yet right?

They have done a few pulley questions and an 8 mark combinatorics question in 2020 (with like 3 shows) so I wouldn't count them out this year. Perhaps they will do a big thing on vector forces this year (just a thought cuz they havent put much emphasis on it in previous years)

 

[RancidMathematician123]

nesa hasnt really tested on forces or binomial proofs yet right?

Balancing of forces- No. Binomial proofs appeared heaps in the old course, but the only real year that focussed on binomial theorem was 2020. Probably worth reviewing

 

[Hejjwheh23]

Yo, I know it may be too late but if anyone wants to check this out just incase there is some binomial identity proofs tomorrow. This channel has a 4 part tutorial/lesson on them.

 

[Herbs!]

Yo, I know it may be too late but if anyone wants to check this out just incase there is some binomial identity proofs. This channel has a 4 part tutorial/lesson on them.

last minute study grind

 

[Hejjwheh23]

last minute study grind

Lol yeah, i just watched the vids in 2x speed ahaha

 

[afourgridbook]

does anyone have tips on managing time during the exam? i always struggle with this and im left with 15-20 mins to complete q14

 

[cute lil monkey]

We definitely getting trig sub integral