Edexcel AS Further Maths Core Pure 13th May

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

Ah OK, my friends said the paper was extremely hard. Do you remember your answers for volume?

What was the induction question - was it series/divisibility/matrices or something else?

My friend said 4.444 radians for volume?

"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... 😂😂

Series

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 :/

I’m glad everyone found it hard though. First few questions really deceived me into thinking the paper was going to be okay 😭

I’m glad everyone found it hard though. First few questions really deceived me into thinking the paper was going to be okay 😭

My friend said 4.444 radians for volume?

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

Can’t remember did it ask for the angle in degrees not radians? I got 4.4 radians

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