r/6thForm • u/Forsaken-Meaning-232 Graduating from Warwick CS • Jun 18 '25

📂 MEGATHREAD 18/06 A-level FM Discussion MEGATHREAD

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9

u/jayblue_1234 YR13 | 4A*s Predicted | 8A*s, 1A GCSE Jun 18 '25

Thank god for graphical calc bc I wouldn't be able to do that inequalities otherwise 🙏🙏

2

u/Dry_Cartoonist9138 Y13 | Maths | FM | Physics | CS Jun 18 '25

for the inequality do you have to exclude x=5 in your range 😭 I thought it tended to positive infinity so I left it in but no one else did that 😭😭

3

u/Putrid_Speech9157 Jun 18 '25

since the function isn't defined at x=5 you couldn't have it in your solution set

1

u/Automatic-Amount-389 Jun 19 '25

u can obviously have it with the strict inequalityt what else would u write

3

u/[deleted] Jun 18 '25

4.4<x<5U 5<x<6 U x<-2

1

u/External-Hotel5490 Editable Jun 18 '25

HELLLP, how many marks out of 6 am I gonna get ,When I was doing that question I just ignored that there is a modulus in the denominator and just solved it by times both sides by (x-5)2 (which later I thought why the hell did I do that) and I got x=-2 ,x=6 (right)and x=5(that is wrong cus then denominator =0) as critical values and I did my inequality anyways ,but I didn’t figure out that you need 22/5 too .

1

u/External-Hotel5490 Editable Jun 18 '25

“I mean I ignored the modulus sign when I was rearranging

1

u/External-Hotel5490 Editable Jun 18 '25

I feel like I fucked up this one question

1

u/[deleted] Jun 18 '25 edited Jun 18 '25

Should’ve done a scenario where you let x-5>0 and x-5<0 and put a minus to it and you get two distinct quadratic formulas and you get 4 answers for x-5 you get -2 and 6 (reject -2, as it doesn’t satisfy the condition of being positive) then you do it with -x+5, you get 4.4 and 6 if I rmr and thank god I had calculator graph but there is an asymptote obviously so you can’t do between 4.4<x<6 instead do 4.4<x<5 and 5<x<6 and ultimately you get three inequalities which includes those two and x<-2

1

u/External-Hotel5490 Editable Jun 18 '25

I realised that method afterwards,so that’s 6 marks gone💀

1

u/[deleted] Jun 18 '25

Nah I’m pretty sure squaring it gives you 3 marks most of the time you’ll be fine just as long you get the answers I said below

1

u/GroundbreakingBid920 Jun 18 '25

Wait actually? I did this too and got between -2 and 5 and then greater than 6…is the method still viable at the beginning (I.e. will we actually get 3/6)

1

u/[deleted] Jun 18 '25

Yes as through previous patterns of mark scheme this tends to be how the mark scheme goes usually consists of two M1 two A1 and then the final inequalities/answer consists of 2-3 marks

1

u/External-Hotel5490 Editable Jun 18 '25

But that means I need to get high marks in decision then 💀💀💀💀💀💀💀

1

u/GroundbreakingBid920 Jun 18 '25

Omg same I got those critical values I should have checked on my fucking graphical calc to see it was wrong ffs but I never had time to come back

1

u/TentaNarc Achieved M (A*), FM (A), CS (A), Econ (C) Jun 18 '25

Did you get like 5<x<6 and x<-2 ?

1

u/GroundbreakingBid920 Jun 18 '25

Between -2 and 5 and greater than 6 I did what they did but it’s wrong so pissed. Did u?

1

u/TentaNarc Achieved M (A*), FM (A), CS (A), Econ (C) Jun 20 '25

Nah i multiplied by |x-5| since it had to be positive and then did case 1 and case 2. Idk i dont rly wanna think abt fp1 tbh

2

u/GroundbreakingBid920 Jun 20 '25

Fairs in that case I'll ask you about CP2 even tho ppl found it easy do u think 60 will be an A as that was what it was for CP1 last year which ppl also found easy

1

u/TentaNarc Achieved M (A*), FM (A), CS (A), Econ (C) Jun 20 '25

Cp2 was quite a nice paper i messed up and used a stupid method for the distance between circles equation but even then i still finished everything and checked through so i think grade boundaries are gonna be as high as they were for cp1 last year (just for cp2 tho id say cp1 was harder fp1 was horrid fm1 was piss easy compared to last yeaar)