Edexcel C3 6665 Legacy paper June 18 2019 Unofficial Markscheme Watch

Silurianwarrior
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First time ever doing this and I genuinely don't what the hell I'm doing.
Sorry for the wait.
Q1: 4
Q2: 4,2,4
Q3: 3,2,4
Q4: 3,4
Q5: 2,3,2
Q6: 2,3,3,2
Q7: 3,5
Q8: 5,3,4
Q9: 5,1,2

2ia, 2ib, and 5c: got these wrong and so I haven't any solutions, someone else please feel free to add the worked solutions for these three.
Won't be uploading the paper as my teacher said not to - sorry.
Hope these help.
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Silurianwarrior
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Evil Homer
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I've made this into its own discussion, hope that is okay!

That looks amazing thank you for setting that up
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zmalikkk
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(Original post by asifrob11)
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First time ever doing this and I genuinely don't what the hell I'm doing.
Sorry for the wait.
Q1: 4
Q2: 4,2,4
Q3: 3,2,4
Q4: 3,4
Q5: 2,3,2
Q6: 2,3,3,2
Q7: 3,5
Q8: 5,3,4
Q9: 5,1,2

2ia, 2ib, and 5c: got these wrong and so I haven't any solutions, someone else please feel free to add the worked solutions for these three.
Won't be uploading the paper as my teacher said not to - sorry.
Hope these help.
Your handwritings nice dude! And thank you so much for the time! I hope all of us get our desired grade!! much love
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MrMa77
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aaarhh I'm an idiot. I forgot to multiply by 10 on 3c. Would I gain any marks for method?
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Silurianwarrior
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(Original post by Evil Homer)
I've made this into its own discussion, hope that is okay!

That looks amazing thank you for setting that up
Hi, on that previous thread, there are five more images for Q6-9. Please bring them onto here, thank you so much!
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Silurianwarrior
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You'll lose an M1 mark and the final A1 mark because of that unfortunately (I think - lol, I'm no examiner. Just a another student).
(Original post by MrMa77)
aaarhh I'm an idiot. I forgot to multiply by 10 on 3c. Would I gain any marks for method?
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MrMa77
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(Original post by asifrob11)
You'll lose an M1 mark and the final A1 mark because of that unfortunately (I think - lol, I'm no examiner. Just a another student).
Damn. I made quite a few silly mistakes so I reckon I lost around 6-7 marks Hopefully it's enough for 90 UMS
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JackManBrief
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Hey there for 4b what do you think I’d get if I just put 4ln(x)+5=(ln(x))^2? I ran out of time unfortunately and I was going to come back to it
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Silurianwarrior
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It was 4 marks, and I would realistically say 1 mark! (just to be safe) as that part was only rearranging the equation really so only 1 mark worth of credit I think.
(Original post by JackManBrief)
Hey there for 4b what do you think I’d get if I just put 4ln(x)+5=(ln(x))^2? I ran out of time unfortunately and I was going to come back to it
Last edited by Silurianwarrior; 4 weeks ago
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ccc8
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grade boundary predictions?
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ahhmed123
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are you man resitting
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JackManBrief
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Okay thanks. How about for 9a if I just put 1+(1/x - 1)^2 / (1/x)^2. Really appreciate it.
(Original post by asifrob11)
It was 4 marks, and I would realistically say 1 mark! (just to be safe) as that part was only rearranging the equation really so only 1 mark worth of credit I think
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harry.samuel24
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How many marks lost for not discounting x=e^-1 in 4b and not including x=1/2 for 2bi (I only put x=>3/4) do you think?
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ccc8
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(Original post by harry.samuel24)
How many marks lost for not discounting x=e^-1 in 4b and not including x=1/2 for 2bi (I only put x=>3/4) do you think?
probably 2, is that all you lost?
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Silurianwarrior
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Again, you didn't reach the final result so probably the final A1 mark for getting the desired result - in order to get that desired result you need to expand, collect like terms etc etc, which I think would be M1? So perhaps 2 marks here lost.
(Original post by JackManBrief)
Okay thanks. How about for 9a if I just put 1+(1/x - 1)^2 / (1/x)^2. Really appreciate it.
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harry.samuel24
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What so 1 for both or 2 for both you mean? And I'm not sure if I put 3.18 or 3.02 but I got the t=9.92 and t=3.03 so hopefully only lose 1 for that




(Original post by ccc8)
probably 2, is that all you lost?
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Silurianwarrior
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1 mark lost (A1) for not rejecting e^-1 and please read my comment after the images regarding Q2bi
(Original post by harry.samuel24)
How many marks lost for not discounting x=e^-1 in 4b and not including x=1/2 for 2bi (I only put x=>3/4) do you think?
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JackManBrief
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Okay thanks a lot. Do you perhaps know what the correct answer for 2ia was? Did it involve something squared at the denominator? Sorry for asking all these questions btw
(Original post by asifrob11)
Again, you didn't reach the final result so probably the final A1 mark for getting the desired result - in order to get that desired result you need to expand, collect like terms etc etc, which I think would be M1? So perhaps 2 marks here lost.
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xexexexexext
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I got 59/60 im going to go kill my self lol
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