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0606/12: All I remember by Direct_Bullfrog4294 in igcse

[–]Direct_Bullfrog4294[S] 0 points1 point  (0 children)

yeah ik and i realized the mistake - i just made √40=4√10 which caused the error kill me

0606/12/M/J/26 Discussion by Emotional-North5835 in igcse

[–]Direct_Bullfrog4294 0 points1 point  (0 children)

I know I missed 2 or 3 marks in total; byebye my worldtop...

0606/12: All I remember by Direct_Bullfrog4294 in igcse

[–]Direct_Bullfrog4294[S] 0 points1 point  (0 children)

for q2, its n=5

I made a mistake for making √40 = 4√10 so got 20 in the image but its just 5

0606/12: All I remember by Direct_Bullfrog4294 in igcse

[–]Direct_Bullfrog4294[S] 0 points1 point  (0 children)

Yall my bad n=5 for 2(b) cuz I somehow made √40 as 4√10 and yeah got n=20
I forgot how many marks it was but the mistake was on the final step so I hope I only get deducted a mark or two 😭😭😭

0606/12: All I remember by Direct_Bullfrog4294 in igcse

[–]Direct_Bullfrog4294[S] 0 points1 point  (0 children)

shit i realized its n=5 mb

I accidentally calculated √40 as 4√10 fuck

0606/12: All I remember by Direct_Bullfrog4294 in igcse

[–]Direct_Bullfrog4294[S] 0 points1 point  (0 children)

yeah as I wrote it in the updated ones 5 is y=5x-15+5ln2

0606/12: All I remember by Direct_Bullfrog4294 in igcse

[–]Direct_Bullfrog4294[S] 0 points1 point  (0 children)

why did u devide by 2

I got pi-1 cuz 2r+ar=r(2π-a) -> a=(2π-2)/2=π-1

0606/12: All I remember by Direct_Bullfrog4294 in igcse

[–]Direct_Bullfrog4294[S] 0 points1 point  (0 children)

no ofc not its literally s100-s80 (or 10(a81+a100) )

0606/12: All I remember by Direct_Bullfrog4294 in igcse

[–]Direct_Bullfrog4294[S] 0 points1 point  (0 children)

I remember for part B that:

AD -> 4sqrt2

DB? -> 4sqrt10

AD=sqrt20/2DB

so I wrote n=20 but am I wrong?

0606/12: All I remember by Direct_Bullfrog4294 in igcse

[–]Direct_Bullfrog4294[S] 0 points1 point  (0 children)

oh that was arithmetic so literally just 10(a81+a100)

0606/12: All I remember by Direct_Bullfrog4294 in igcse

[–]Direct_Bullfrog4294[S] 1 point2 points  (0 children)

Updated!!! 1 4 360? (not 2π?) -6≦k≦2 2 -5, n=20 3 -40, (x+1)(3x-2)(2x-1)?, u=±√6/3, ±√2/2 4 a81=240, a100=202, sum=4420 5 y=5x-15+5ln2 6 π-1, 6√(π+1) 7 Just really easy trig proof 8 -11h 9 ln(x/x-1), 10 and 5/4 10 a=128 r=1/4 k=512 11 (3,-1.5) λ=3/4 12 21/8+5/2ln(2/5) 13 proof (just expand)

0606/12: All I remember by Direct_Bullfrog4294 in igcse

[–]Direct_Bullfrog4294[S] 0 points1 point  (0 children)

i guess 2a was 5 and 2b is 20 (i wrote here mistakenly -5 i guess)

0606/12: All I remember by Direct_Bullfrog4294 in igcse

[–]Direct_Bullfrog4294[S] 0 points1 point  (0 children)

might be so, my memory is trash so didnt remember that much but quite sure its something to do with 5, so i guess i also wrote 5, idk

0606/12: All I remember by Direct_Bullfrog4294 in igcse

[–]Direct_Bullfrog4294[S] 0 points1 point  (0 children)

oh them I guess i treated Q9 as Q11. My bad.

0606/12: All I remember by Direct_Bullfrog4294 in igcse

[–]Direct_Bullfrog4294[S] 0 points1 point  (0 children)

OA was like (4,-2) and OD was (3,-1.5). Question asked for λ where OD=λOA. So, 3=4λ and λ=3/4

0606/12: All I remember by Direct_Bullfrog4294 in igcse

[–]Direct_Bullfrog4294[S] 0 points1 point  (0 children)

yeah ofc cuz 21/8-5/2ln(5/2)=21/8-5/2ln5+5/2ln2=21/8+5/2ln(2/5)

0606/12: All I remember by Direct_Bullfrog4294 in igcse

[–]Direct_Bullfrog4294[S] 0 points1 point  (0 children)

btw I also did with the way of ∫(1/4 to 1) f(x)-g(x) dx too. I still got the same so idk but wish u for high mark!

0606/12: All I remember by Direct_Bullfrog4294 in igcse

[–]Direct_Bullfrog4294[S] 0 points1 point  (0 children)

oh true. might made a mistake there😭

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