# Edexcel AS Further Maths Core Pure 13th MayWatch

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1 week ago
#21
(Original post by SarahLouise0911)
The order is wrong but I found the test hard :/

1.Matrix 2x2 inverse, determinant was -18 so not singular. Show that line was invariant.
2. Roots of polynomial w-3=x, don’t remember my answer though.
3. Argand diagrams? Roots aren’t the same quartic because they’re not complex conjugates. Prove argument was pi/4 and shade the diagram.
4. Is the line on the plane, intersect or parallel - didn’t manage to finish.
5. Three roots questions, -4 or 4 (don’t remember) and 2 +- 2^1/2. P was 22 or -22
6. Prod by induction (show that)
7. Vectors shortest distance I got as 427 approx so I saiid it was practical as OP was only 5 longer so not significant
8. Volume of revolution, I got the angle as 254 approx?
9. Series with the marbles mean and standard deviation, got the show that but can’t remember my answer for the standard deviation.
10. ChImPaNzEezZz
What was the induction question - was it series/divisibility/matrices or something else?
0
1 week ago
#22
(Original post by thekidwhogames)
Ah OK, my friends said the paper was extremely hard. Do you remember your answers for volume?
Erm was that the angle one? I don’t remember what I put down in the end, although I think I ended up with something like 20/3 as part of the result (if this means anything). Found a few of the questions quite hard (and ran out of time).
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1 week ago
#23
"8. Volume of revolution, I got the angle as 254 approx? "

Can't relate, got -3000 pi for the rotation on top of negative area where there shouldn't be negative area ever... 😂😂
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1 week ago
#24
Series
(Original post by _gcx)
What was the induction question - was it series/divisibility/matrices or something else?
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1 week ago
#25
My friend said 4.444 radians for volume?
8
1 week ago
#26
(Original post by thekidwhogames)
My friend said 4.444 radians for volume?
I've seen this answer a lot on reddit, but I don't have the paper so can't verify.
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1 week ago
#27
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1 week ago
#28
I worked out the volume of revolution like normal which gave the answer if it was rotated 360 then I compared it to the actual volume. The actual volume was like 70.7% of the 360 degree volume so I did it like that. Writing it out now it sounds wrong :/
(Original post by Alyscara)
"8. Volume of revolution, I got the angle as 254 approx? "

Can't relate, got -3000 pi for the rotation on top of negative area where there shouldn't be negative area ever... 😂😂
1
1 week ago
#29
(Original post by SarahLouise0911)
Series
Ah, I was wondering because they can test induction proof beyond those "prescribed" 3 and that'd throw people off. They've done this on the specimen but haven't done it with the 2 live papers so far, but there's still the A-level CPs to come.
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1 week ago
#30
I put 2.2 radians, not sure if that's right.
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1 week ago
#31
got 221m for vectors, 76 for standard deviation, 40/9 (4.44) radians for volume of revolution, p = 22
4
1 week ago
#32
(Original post by SarahLouise0911)
I worked out the volume of revolution like normal which gave the answer if it was rotated 360 then I compared it to the actual volume. The actual volume was like 70.7% of the 360 degree volume so I did it like that. Writing it out now it sounds wrong :/
That's really smart, I think I tried to solve for theta by dividing 461/2 by squiggle(f(X))² between 8 and 1/8, it was so wrong, but I didn't have enough time to finish the last 3
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1 week ago
#33
Looking at this thread made me realise I halved something when I should’ve doubled it on the rotations questions and then it would’ve been totally right
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1 week ago
#34
The paper was shite
0
1 week ago
#35
I’m glad everyone found it hard though. First few questions really deceived me into thinking the paper was going to be okay 😭
0
1 week ago
#36
(Original post by SarahLouise0911)
I’m glad everyone found it hard though. First few questions really deceived me into thinking the paper was going to be okay 😭
even the standard deviation question?
0
1 week ago
#37
(Original post by SarahLouise0911)
I’m glad everyone found it hard though. First few questions really deceived me into thinking the paper was going to be okay 😭
Right, I thought I'd have enough time, I did the first half of the paper in 40 minutes, me thinking I have time decides to take it slow for the vectors, looks at the time and sees I have half an hour to do the last four questions. I skim the pages and realise the last three questions count for 32 marks, 12, 8, 12.... I then abandon all hope on vectors and almost have a panic attack in the exam room. It was disgusting.
0
1 week ago
#38

welldone!
(Original post by thekidwhogames)
My friend said 4.444 radians for volume?
1
#39
(Original post by SarahLouise0911)
The order is wrong but I found the test hard :/

1.Matrix 2x2 inverse, determinant was -18 so not singular. Show that line was invariant.
2. Roots of polynomial w-3=x, don’t remember my answer though.
3. Argand diagrams? Roots aren’t the same quartic because they’re not complex conjugates. Prove argument was pi/4 and shade the diagram.
4. Is the line on the plane, intersect or parallel - didn’t manage to finish.
5. Three roots questions, -4 or 4 (don’t remember) and 2 +- 2^1/2. P was 22 or -22
6. Prod by induction (show that)
7. Vectors shortest distance I got as 427 approx so I saiid it was practical as OP was only 5 longer so not significant
8. Volume of revolution, I got the angle as 254 approx?
9. Series with the marbles mean and standard deviation, got the show that but can’t remember my answer for the standard deviation.
10. ChImPaNzEezZz
0
1 week ago
#40
(Original post by dasdsd)
0
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