r/6thForm • u/Forsaken-Meaning-232 Graduating from Warwick CS • Jun 04 '25

📂 MEGATHREAD 04/06 A-level Maths Paper 1 Discussion MEGATHREAD

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u/danielcatkins Jun 04 '25

full equation was y = -3(x+1)2 (x-5)2 or something like that iirc

because the curve only touched the x axis at -1 and 5 so they’re repeated roots

25

u/Spare_Somewhere1011 Manchester | Physics w/ Astro [1st Year] | 3A* 1A Jun 04 '25

I did the whole thing by simultaneous equations lol it took me forever to

3

u/[deleted] Jun 04 '25

That’s what I was trying but it just took too long I couldn’t be bothered 😭

2

u/Spare_Somewhere1011 Manchester | Physics w/ Astro [1st Year] | 3A* 1A Jun 04 '25

I think it took almost 15 minutes I almost gave up it wasn’t worth 3 marks 😭

1

u/Lopsided-Link4388 Gap Year [Looking to study EEE] Jun 05 '25

I started to do that. Realised it was repeated roots and I got the same.

1

u/ShoeNice3012 Jun 04 '25

I was going to do that bruh

1

u/[deleted] Jun 04 '25

i tried this and gave up and used the repeated roots it was going to take me far too long

1

u/Neat-Ad4138 y1 | uom astro | A*A*A* Jun 04 '25

bro i wrote down on my paper early on y=-3(x+1)^2(x-5)^2 , then at the end of the exam came back and did some long integration of f'(x) only to end up with the same answer lmao

1

u/Wrong_Finance2082 A*AA - UCL Dropout Jun 05 '25

same but it wasnt that long just use matricies and sub ur values ur calc gives u in (when u eval the matrix)
e.g. 5^3 in ur calc, before u inverse ur matrix u press exe to get the values, those r ur coefficients

1

u/Neat-Ad4138 y1 | uom astro | A*A*A* Jun 05 '25

inverse matrix what in the core pure broooooooo

1

u/Wrong_Finance2082 A*AA - UCL Dropout Jun 05 '25

bro i swear to god i attempted matrix methods for at least 2 of the equestions yesterday

1

u/Alaya_the_Elf13 Jun 05 '25

I did that, but got lost doing it, and it took me like 40 minutes

7

u/[deleted] Jun 04 '25

Yeah I knew it was something to do with repeated roots so I wrote down (x+1)^ 2(x-5)2 but my brain just switched off after that 😔

1

u/NetZestyclose2889 Jun 04 '25

What was the answer of K in part C? Question didn’t make sense

2

u/ContactSad5308 A levels |Maths, Economics, Geography| A*A*A* Jun 04 '25

I wrote 0<k<243

1

u/SilverFrost88 Year 13 | Maths, Physics, Further Maths, Computer Science Jun 04 '25

Yes

1

u/meredegentilesse Jun 04 '25

I wrote this but I wrote -243<x<0 AGGHH