2026 HSC CHAT (6 Viewers)

[Study to success]

View attachment 47382
definitely don't have a fat prelim and HSC folder
definitely don't have 2 more

What do u have on there

 

[cristal]

What do u have on there

I have a lot of math prelims, stuff off THSC and ace ( so wouldn't count that) and a lot of things I've dug up from BoS.
For just math I don't have as much advanced stuff but I have some revision things I believe idk

 

[cristal]

Are there are topic stuff you want I can check
Can also try generating a paper from past HSC questions

 

[NotBamboo]

@Shavi Masee
got it with the help of AI cus i forget about turning point silly me

AND CHECKING WITH DESMOS DRUMROLL PLEASE


@cheesynooby
can u teach me how to use the element of symbol for domain and range thanks

 

[Study to success]

Are there are topic stuff you want I can check
Can also try generating a paper from past HSC questions

Thanks. Maybe some stuff on linear, non linear and polynomials cause I have a topic test on that first week back and maybe some stuff for term 2 like calculus. Also we should all put some more stuff on the drive cause it is kinda empty

 

[NotBamboo]

domain:
1. solve the quadratic and identify its concavity to find the x values where it is negative e.g. if it has x intercepts at x = -2 and 2, and is concave up the quadratic is negative between x = -2 and 2. since u cant square root a negative and cant divide by 0, that gives u the domain (x < -2, x > 2)

range:
2. find the range of the quadratic by finding the y coord of the vertex. e.g. vertex at (1, 3) and concave down = range: y ≤ 3
3. square root that (keeping in mind u can't square root a negative)-> 0 ≤ y ≤ sqrt3
4. find the reciprocal of that (a graph of y = 1/x could be useful - imagine the range of 1/x if you could only plug in values between 0 and sqrt3 (from step 3) -> y ≥ 1/sqrt3

silly she needed help with the ii)

also can u show me a faster way of doing it, refer to previous post
if this in my exam its gonna use a buncha time

 

[cristal]

@Shavi Masee

View attachment 47383

Wtf is this

 

[NotBamboo]

Wtf is this

my working?
i even had to clean it up and add lil comments for u guys
ur welcome

i can explain any part of it if u dont understand

 

[cristal]

my working?
i even had to clean it up and add lil comments for u guys
ur welcome

i can explain any part of it if u dont understand

I don't understand anything
I'll work through it first myself just to understand
But why differentiation btw?

 

[Shavi Masee]

Can't thank you guys rn I'm boiling in the heattt. Will get to you soon
Thank you bamboo (ive got ur rock!!!)and cheesynooby, and everyone elsee

 

[Study to success]

Can't thank you guys rn I'm boiling in the heattt. Will get to you soon
Thank you bamboo (ive got ur rock!!!)and cheesynooby, and everyone elsee

Are u sitting in the sun

 

[cheesynooby]

@cheesynooby
can u teach me how to use the element of symbol for domain and range thanks

wut
like this?

I don't understand anything
I'll work through it first myself just to understand
But why differentiation btw?

yeah why differentiation

 

[NotBamboo]

I don't understand anything
I'll work through it first myself just to understand
But why differentiation btw?

At one point the gradient is 0
When u differentiate it, the y value of it will be 0 because original function's gradient is 0, making the x easy to find.
This is called a critical point
Usually, u would use the second derivative to find the nature of the turning point (being a max)
But here since I already know a vague shape of the graph, I know that this will be the local maximum, so I only need to use first derivative
now that i have the x value by subbing in y=0, i can plug it into the original function to get the y value of the point as well yayyyyy!!!!
THE END.

 

[Shavi Masee]

Are u sitting in the sun

Ya

 

[NotBamboo]

View attachment 47388
Ya

enjoyyyyyy
we can discuss this later
that beach is relatively empty ngl

 

[cristal]

View attachment 47388
Ya

Omg the water looks rlly nice


@NotBamboo I still don't understand
Idk everything much abt derivatives yet and all the first and second stuff and I don't know what's a local maximum is (do you mean like the turning point)

Also it's only like chapter 3 right you wouldn't really be using that yet right

 

[NotBamboo]

wut
like this?
View attachment 47385

yeah why differentiation

wait so do u just chuck it in like that

 

[Shavi Masee]

enjoyyyyyy
we can discuss this later
that beach is relatively empty ngl

Everyone's on the opposite end between the flags swimming, I don't like ocean water, it's scary T-T

 

[NotBamboo]

Omg the water looks rlly nice


@NotBamboo I still don't understand
Idk everything much abt derivatives yet and all the first and second stuff and I don't know what's a local maximum is (do you mean like the turning point)

Also it's only like chapter 3 right you wouldn't really be using that yet right

wait oopsies
second derivative is in 12 adv
intro to calculus should already be taught in 11 adv right?
like derivatives and stuff
critical point local max local min -> just think of them as turning points they basically are

 

[jane1820]

View attachment 47388
Ya

Coogee?
off topic but i HATE the beach, maybe cus i grew up there (10+ yrs) n is just sick of it