AQA A Level Maths Paper 3 Unofficial Markscheme 2019

Put in your answers below!

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

Put in your answers below!

(edited 4 years ago)

Reply 2

Ryan Mathew

4

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

(edited 4 years ago)

Reply 3

Edexcel Are mugs

9

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

Reply 4

Maths60

4

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.

Area of shaded region- 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

Reply 5

Ryan Mathew

4

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

Reply 6

Maths60

4

1650 how?

Original post by Edexcel Are mugs

the factorial I got 1650

Reply 7

bbbb554

3

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

Someone start a poll

Original post by Ryan Mathew

Nah the sector question

Yeh that’s right I got that as well that is the correct answer

Reply 10

unagdi

9

partial fractions did anyone else get 4 and 7

Reply 11

shalomitstom

3

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

Reply 12

bbbb554

3

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

Reply 13

RavenclawOwl

OP

15

Me!

Original post by unagdi

partial fractions did anyone else get 4 and 7

Reply 14

Jssum01

3

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

(edited 4 years ago)

Reply 15

rayan_kotecha

3

Original post by unagdi

partial fractions did anyone else get 4 and 7

I got 4 and 7

Reply 16

shalomitstom

3

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

Reply 17

username4706050

15

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

Reply 18

Edexcel Are mugs

9

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