# AQA A Level Maths Paper 3 Unofficial Markscheme 2019

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#1
1
1 year ago
#2
Q1) The domain was -1 to 1
Q2) A first one as it was the only sequence increasing
Q3) A I got A
Q4) The area of the segment you had to work out the radius from the equation of the circle and then use the formula and then use the area of a triangle to then subtract it to find the segment I think I got 16. Something
Q5 I think was proof by exhaustion
Q5)For the partial fractions I got 6 and 7.
Area of shaded region (within circle)- 16.8
Temperature question- 39.8
Normal Hypothesis test- 0.0345>0.025 —> accept Ho
Finding mean and standard deviation- mean= 37.3 sigma=5.7
Last part of final question- 0.296
(Original post by RavenclawOwl)
Last edited by Maths60; 1 year ago
0
1 year ago
#3
Correct my errors.

Area of shaded region (within circle)- 16.8
Temperature question- 39.8
Normal Hypothesis test- 0.0345>0.025 —> accept Ho
Finding mean and standard deviation- mean= 37.3 sigma=5.7
Last part of final question- 0.296
Last edited by Ryan Mathew; 1 year ago
2
1 year ago
#4
the factorial I got 1650
(Original post by Maths60)
Q1) The domain was -1 to 1
Q2) A first one as it was the only sequence increasing
For the partial fractions I got 6 and 7.
The exponential question where you had to find the temperature after 15 minutes was 31.8
1
1 year ago
#5
Area of the shaded region which question was that are you talking about the one where you had to sketch the inequality
(Original post by Ryan Mathew)
Correct my errors.

Temperature question- 39.8
Normal Hypothesis test- 0.0345>0.025 —> accept Ho
Finding mean and standard deviation- mean= 37.3 sigma=5.7
Last part of final question- 0.296
0
1 year ago
#6
(Original post by Maths60)
Area of the shaded region which question was that are you talking about the one where you had to sketch the inequality
Nah the sector question
0
1 year ago
#7
1650 how?
(Original post by Edexcel Are mugs)
the factorial I got 1650
1
1 year ago
#8
agreed

(Original post by Ryan Mathew)
Correct my errors.

Area of shaded region (within circle)- 16.8
Temperature question- 39.8
Normal Hypothesis test- 0.0345>0.025 —> accept Ho
Finding mean and standard deviation- mean= 37.3 sigma=5.7
Last part of final question- 0.296
0
1 year ago
#9
Someone start a poll
1
1 year ago
#10
(Original post by Ryan Mathew)
Nah the sector question
Yeh that’s right I got that as well that is the correct answer
0
1 year ago
#11
partial fractions did anyone else get 4 and 7
30
1 year ago
#12
(Original post by Maths60)
Q1) The domain was -1 to 1
Q2) A first one as it was the only sequence increasing
The area of the segment you had to work out the radius from the equation of the circle and then use the formula and then use the area of a triangle to then subtract it to find the segment I think I got 16. Something
For the partial fractions I got 6 and 7.
The exponential question where you had to find the temperature after 15 minutes was 31.8
(Original post by Maths60)
1650 how?
100!/98!3! = 100*99*98!/98!*3! = 100*99/3*2*1 = 1650
6
1 year ago
#13
partial fraction was 4 and 7
(Original post by Maths60)
Q1) The domain was -1 to 1
Q2) A first one as it was the only sequence increasing
The area of the segment you had to work out the radius from the equation of the circle and then use the formula and then use the area of a triangle to then subtract it to find the segment I think I got 16. Something
For the partial fractions I got 6 and 7.
The exponential question where you had to find the temperature after 15 minutes was 31.8
5
#14
Me!
(Original post by unagdi)
partial fractions did anyone else get 4 and 7
5
1 year ago
#15
(Original post by Maths60)
1650 how?
So it’s everything 98 or below cancels with the 98 factorial so your just left with (100x99)/3! or something like that can’t remember the question
Last edited by Jssum01; 1 year ago
0
1 year ago
#16
(Original post by unagdi)
partial fractions did anyone else get 4 and 7
I got 4 and 7
5
1 year ago
#17
Stats multi choice I put moderate negative (wasn't sure how strong "stong" needed to be), and quota sampling. The by parts question A=4 B=7 I think (could have been the other way round). Then the integration that follow I got ln(81/16) + 7/6 i think
5
1 year ago
#18
Got that for the integration
(Original post by shalomitstom)
Stats multi choice I put moderate negative (wasn't sure how strong "stong" needed to be), and quota sampling. The by parts question A=4 B=7 I think (could have been the other way round). Then the integration that follow I got ln(81/16) + 7/6 i think
3
1 year ago
#19
Correctimundo
(Original post by shalomitstom)
Stats multi choice I put moderate negative (wasn't sure how strong "stong" needed to be), and quota sampling. The by parts question A=4 B=7 I think (could have been the other way round). Then the integration that follow I got ln(81/16) + 7/6 i think
0
#20
What did people get for the question about Jamal the farmer?
0
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