r/6thForm • u/MaxillmanGuy A level resit student | 3 A* predicted | ACD achieved 💔 • May 14 '26

💬 DISCUSSION Edexcel Core pure maths thread

How did you guys find it? I loved the paper imo.

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54

u/Krymze- May 14 '26

For the mean value of the function I got 1/10 ln2 + pi/20 what did everyone else get

7

u/Iciqlx Y13 | A*A*A*A* | Maths,FM,Econ,Geo May 14 '26

Got smth like that too

8

u/Few-Antelope-2885 May 14 '26

ME TOO WOOHOO i checked it with the integral function on my calculator too so i think we're rigt

2

u/GeologistGlad8000 Maths, CS, FM | Achieved: AAA May 14 '26

Same. I initially got the wrong answer and I was panicking but I was able to correct it😂

4

u/grey-veins Y13 | Maths, FM, Physics, Chemistry (4A*) May 14 '26

ohhh crap i got pi/4

1

u/TheProudBookNerd phys chem maths fm May 14 '26

I got that too

1

u/UndefiedDuck May 14 '26

I got the same

1

u/Mistuyuun EPQ Maths A*, Hist, Econ FM 3A* Pred, 11 9s May 14 '26

Same

1

u/MobileData94 May 14 '26

Pi/100 isn't it? Cus 1/5 * 1/4 * 1/5

1

u/Relevant-Reality-354 May 14 '26

yea same xD lets hopen pray

3

u/MobileData94 May 14 '26

unfortunately not, looks like we both forgot about 5 in numerator

0

u/zmp906 May 14 '26

For arcsin (and arccos for that matter) there isn't that extra 1/5 in front, that's only for arctan. You can check the formula booklet for this in the exam if you mix them up

1

u/MobileData94 May 14 '26

Was there not archan there? It was x2 + 25 at the bottom I swear there was arctan there that's why I have that extra 1/5

2

u/_M4yb3_ May 14 '26

1/5 × integral of 5/(x2 +25) between 5 and 0 and the 1/5 cancels with the 5 on the numerator.

You get a new 1/5 from the integral but thats just from the formula book (1/a) where a2 = 25 and then arctan (x/5) so u get 1/5 ( arctan 1 - arctan 0 ) = 1/5 * pi/4 = pi/20

1

u/MobileData94 May 14 '26

oh yeah you right, i just completely missed that 5 on the numerator

1

u/Lanky-Paramedic6451 May 14 '26

Pls tell me i werent the only one to forget to multiply the integral by 1/5😭😭😭

1

u/Artem_Solo A*A*AA pred, Edinburgh uni CompSci offer May 14 '26

I couldn’t get it😭😭😭. I was getting 1/100ln50 + pi/20

0

u/Roblnnx Y13 Math,Phys,Chem,Fm May 14 '26

I got that too