AQA AS Further Maths Paper 1 Pure 2019 (13th May) unofficial markscheme Watch

Poll: What you think you got? (Marks)
10-20 (12)
6.56%
20-30 (21)
11.48%
30-40 (39)
21.31%
40-50 (41)
22.4%
50-60 (32)
17.49%
60-70 (16)
8.74%
70-80 (22)
12.02%
Ghjkkiggf
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#41
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#41
You then have to multiply by two as when rotating through 2pi radians you multiply by pi, V= pi x integral hence V= angle/2 x integral, so it’s 40/9
(Original post by RVSZN)
The equation was y=2x^1/2 + x^-2/3, when you apply this to the volumes of revolution equation with the limits x=1/8 and x=8 you get something like 103.725, which then to find theta you do (461/2)/103.725 and you get 20/9
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AI3xander
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#42
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#42
What did people get for the distance on the mountain vectors question?
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MattyHAMB
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#43
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#43
Yeah I got 4.4 radians but put it in degrees first lmao
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max532
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#44
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#44
(Original post by eclipseboi)
5 marker. It was the first "proper" question, I think. Asked you to find the volume of revolution for the region bounded by the hyperbola, y-axis, x-axis and the line y=a.
yeah that was a show question that the volume was ma^3 where m was 3.40 (3.s.f) m=13/12(pi) not sure how people were getting 2.2 radians
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eclipseboi
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#45
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#45
(Original post by max532)
yeah that was a show question that the volume was ma^3 where m was 3.40 (3.s.f) m=13/12(pi) not sure how people were getting 2.2 radians
I had literally no idea how to do it, so I don't know what the correct answer was
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lemmens
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#46
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#46
(Original post by HateMarkSchemes)
Or p < -2, because you could move it either down or up.
but if you moved it down, the graph would still cut through the x-axis and thus give real roots
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max532
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#47
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#47
(Original post by eclipseboi)
I had literally no idea how to do it, so I don't know what the correct answer was
They're talking about an Edexcel question, can't remember the question entirely but majority of people at my college were getting 13/12 (pi) so I'm hoping that's the right answer
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max532
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#48
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#48
(Original post by lemmens)
but if you moved it down, the graph would still cut through the x-axis and thus give real roots
I had 1 real root, which was gamma... You'd still get a crossing it it was moved up which is okay. So pretty sure it was p>2 p<-2
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eclipseboi
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#49
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#49
(Original post by max532)
They're talking about an Edexcel question, can't remember the question entirely but majority of people at my college were getting 13/12 (pi) so I'm hoping that's the right answer
Oh right, I was referring to the AQA volumes of revolution question where you had to give your answer as ma^3.
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lemmens
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#50
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#50
(Original post by max532)
I had 1 real root, which was gamma... You'd still get a crossing it it was moved up which is okay. So pretty sure it was p>2 p<-2
ah yes I see what you mean now!!
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username3193618
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#51
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#51
Don’t use pi use theta once you’ve completed your integration divide by the integrand and you’ll get theta= 20/9 which is 2.2
(Original post by eclipseboi)
I had literally no idea how to do it, so I don't know what the correct answer was
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meinkemf
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#52
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#52
The answer is 13/12Pi
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username3193618
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#53
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#53
The question where people are getting 2.2 radians is an equation bounded between x=8 and x=1/8
(Original post by max532)
yeah that was a show question that the volume was ma^3 where m was 3.40 (3.s.f) m=13/12(pi) not sure how people were getting 2.2 radians
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#DD4life
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#54
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#54
Holy **** I got that as well!!!!
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lemmens
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#55
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#55
how did you all find paper 2, and which topics did you study??
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meinkemf
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#56
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#56
Did stats and mechanicz, went much better than paper 1. Anyone else remember their answers, I got 1 17m/s^2 for the a celebration of the truck and 4020j lost for the slide
(Original post by lemmens)
how did you all find paper 2, and which topics did you study??
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alicestudies
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#57
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#57
did you mean 1.17? If so I got the same!! And I think I got around that for the energy lost too - if I'm honest, the paper has been erased from my mind though, not a mechanics fan at all! 🤣
(Original post by meinkemf)
Did stats and mechanicz, went much better than paper 1. Anyone else remember their answers, I got 1 17m/s^2 for the a celebration of the truck and 4020j lost for the slide
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meinkemf
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#58
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#58
Yeah I meant 1.17, mechanics was the topic that stopped me from ending it all
(Original post by alicestudies)
did you mean 1.17? If so I got the same!! And I think I got around that for the energy lost too - if I'm honest, the paper has been erased from my mind though, not a mechanics fan at all! 🤣
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benster789
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#59
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#59
(Original post by asifmahmoud)
How did everyone find it? It was hard to finish everything in time. Can we start an unofficial markscheme for today's paper? Thank you!!
AIDS
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