Maths Extension 2 Predictions/Thoughts (1 Viewer)

[scaryshark09]

It was definitely somewhere in between 2021 and 2022 but 100% not 2021 easy

Ok that would be good

 

[constexpr]

WHAT THE FUCK WAS THATTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTT
i hope you all did an abysmal job so my 30% raw can scale to 90

 

[rockydo4u]

How can you do product of roots when u don’t know if the rest of 2 roots are real or not???? How will u find the the i component if it ain’t real

 

[smiley_riley]

How can you do product of roots when u don’t know if the rest of 2 roots are real or not???? How will u find the the i component if it ain’t real

wdym? you have two roots, you need two more. You have (abcd being roots): a+b+c+d = 1 add abcd = -30, you have a and b given so you have 2 equations and 2 variables

 

[synthesisFR]

How can you do product of roots when u don’t know if the rest of 2 roots are real or not???? How will u find the the i component if it ain’t real

What?
i) was just conjugate root theorem
ii) was sum and product with the two unknown roots as alpha and beta then solve
Iirc it was -3,2 as solutions

 

[gunnerfan99]

Does anyone have a copy? I don’t want solutions just the qs so I can give it a go

 

[synthesisFR]

@carrotsss pls day it was hard

 

[eeeeeeeeeeeqwe]

Would this paper align the same as 2022?

 

[Hudz777]

nahhhh that was wild. what the actual was that SHM with the two particles wtf. spent like an hour on it.

 

[synthesisFR]

nahhhh that was wild. what the actual was that SHM with the two particles wtf. spent like an hour on it.

Oh
I found that question beautiful
Ngl probably got it wrong but it was fun hahah

 

[Hudz777]

what was that projectile motion one part 4 with the weird ass graph, how the hell does 4x/9 correlate

 

[constexpr]

What?
i) was just conjugate root theorem
ii) was sum and product with the two unknown roots as alpha and beta then solve
Iirc it was -3,2 as solutions

no fucking way it was, my working for that involved none of that...

i just did the conjugate factor thing

with the 2 - i roots i did

z^2 - 2Re(z) +|z|^2

which gave

(z^2 - 4z + 5)
i then did a factor by inspection and got
(z^2 - 4z + 5)(z^2 - z- 6)

somehow i completely ignored all those variable coefficients in the polynomial and pulled it off

 

[Hudz777]

Oh
I found that question beautiful
Ngl probably got it wrong but it was fun hahah

but it didn’t say whether it was at its maximum at 4 or if it was still moving away. I was hella confused

 

[carrotsss]

45 people viewing this thread damn

that exam was alright, definitely harder than 2021 and close to 2022 though

im annoyed at myself because I made a silly mistake on that sphere question and possibly the locus question at the end as well but I feel decently alright about every other question (finished with just over 20 minutes left so didn’t have time to check tons but there was still enough time) so we’ll see

 

[Hudz777]

also, the triangle was wack asf, had no idea

 

[Hudz777]

45 people viewing this thread damn

that exam was alright, definitely harder than 2021 and close to 2022 though

im annoyed at myself because I made a silly mistake on that sphere question and possibly the locus question at the end as well but I feel decently alright about every other question (finished with just over 20 minutes left so didn’t have time to check tons but there was still enough time) so we’ll see

what the hell man you’re insane!

 

[carrotsss]

but it didn’t say whether it was at its maximum at 4 or if it was still moving away. I was hella confused

it started at rest which means it was a maximum. threw me at first too though

 

[synthesisFR]

45 people viewing this thread damn

that exam was alright, definitely harder than 2021 and close to 2022 though

im annoyed at myself because I made a silly mistake on that sphere question and possibly the locus question at the end as well but I feel decently alright about every other question (finished with just over 20 minutes left so didn’t have time to check tons but there was still enough time) so we’ll see

Y bruh
Mf I didn’t have time left

 

[carrotsss]

What?
i) was just conjugate root theorem
ii) was sum and product with the two unknown roots as alpha and beta then solve
Iirc it was -3,2 as solutions

yeah you could just do sum/product and then inspect

 

[dsakvyilsa]

45 people viewing this thread damn

that exam was alright, definitely harder than 2021 and close to 2022 though

im annoyed at myself because I made a silly mistake on that sphere question and possibly the locus question at the end as well but I feel decently alright about every other question (finished with just over 20 minutes left so didn’t have time to check tons but there was still enough time) so we’ll see

you're actually insane wtf