Unoffical Mark scheme for C1 AQA 2016
It would help if you could link answers to questions as i cant remember them
Questions:
1) a)Asked to work out gradient of a tangent, m=  5/3 [2]
b)Asked to find coordinates of B B(  3,4) [3]
c)Asked to find K K=  30 [2]
2) a) simplify (3√5)^2 = 45 [1]
b) i cant remember the question but the answer was75  32√5 [4]
3) a) y=(x7/2)^2  41/4
b) min value = 41/4 [1]
c) Translation of (1/2 , 41/4)
4) a) show that (x+3) was a factor of x^3  5x^2 8x + 48, p(3) = 0, (x+3) is a factor of p(x).
b) three linear factors of p(x) = (x+3)(x4)(x4)
c) find remainder when p(x) was divided by (x+2) R=20
d) Factorise p(x) using (x+2) R = (x2)(x^23x14) + 20 [3]
5) a) asked to find equation of circle (x5)^2+(y+3)^2=65 (note 65 = r^2) [3]
b) asked to find coordinates of B (AB is diameter) B ( 12, 7) [2]
c) asked to find equation of tangent at A 7x4y+18=0 [5]
d) asked to find length of CT = 9 [2]
6) a) y=32x40
b)Q(5/4) [1]
c) upside down positive graph passing through y axis at 8 [2]
d) x = 1±√5
7) a)
b)
c) definite integral = = 81 /4 [5]
d) area of shaded region = = 45/4 [3]
8) a) d^2y/dx^2=  2x  9x^2 [2]
b) verify that P was a minimum point sub x coordinate of P into dy/dx (given in the question) to prove it was a stationary point, then sub in xcoord of p into d^2y/dx^2 to get +45, d^2y/dx^2>0 therefore minimum point [4]
c)show that y is decreasing, so make your dy/dx<0 and rearrange to get into the form they wanted (note when you multiply by 1 the inequality sign flips)
d) cant remember anything except the answers were k>6 and k<3/2
Answers that need a question to be assigned to
 k=4 and k=20
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C1 Maths AS aqa 2016 (unofficial mark scheme new)
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 1
 18052016 14:52
Last edited by username2592579; 18052016 at 21:38.Post rating:17 
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 2
 18052016 14:59
Does anyone remember the questions and the equations given???

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 3
 18052016 15:03
(Original post by beanigger)
Unoffical Mark scheme for C1 AQA 2016
It would help if you could link answers to questions as i cant remember them
Questions:
1) a)Asked to work out gradient of a tangent, m=  3/2
b)Asked to find coordinates of B B(  3,4)
c)Asked to find K K=  30
2) a) simplify (3√5)^2 = 45
b) i cant remember the question but the answer was75  32√5
3) a)
4) a)
5) a) asked to find equation of circle (x5)^2+(y+3)^2=65 (note 65 = r^2)
b) asked to find coordinates of B (AB is diameter) B ( 12, 7)
c) asked to find equation of tangent at A 7x4y+18=0
d) asked to find length of CT = 9
6) a)
7) a) i think there was 4 parts to this question i cant remember part a and b
b)
c) definite integral = 81/4
d) area of shaded region = 45/4
8) a) cant remember anything except the answers were k>6 and k<3/2
Answers that need a question to be assigned to
 Translation of (1/2 , 41/4) and y=(x7/2)^2  41/4
 Q(5/4), y=32x40, upside down positive graph passing through y axis at 8
 k=4 and k=20
 x = 1±√5
 remainder = 20
 three linear factors (x+3)(x4)(x4)
 d^2y/dx^2=  2x  9x^2 sub in xcoord of p to get 45, 45>0 therefore minimumPost rating:3 
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 4
 18052016 15:04
Love you bruv, i love people who make mark schemes, i imagine them as snails working away slowly on their computer, for hours on end.
You are mark scheme championPost rating:5 
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 5
 18052016 15:05
(Original post by UbaidS)
how did you get 65 for 5a
Do you remember the equation given for the very first question?Post rating:1 
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 6
 18052016 15:09
(Original post by Rit101)
Many people in our 6th form got Root65 for the Radius of the Circle.
Do you remember the equation given for the very first question?
where 'k' = r^2 = 65
anyone who put sqroot65 is wrong and would of lost 1 markPost rating:1 
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 7
 18052016 15:10
(Original post by Rit101)
Many people in our 6th form got Root65 for the Radius of the Circle.
Do you remember the equation given for the very first question?Post rating:1 
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 8
 18052016 15:11
(Original post by Sniperdon227)
The q 'stated' (xa)^2 + (yb)^2 = k
where 'k' = r^2 = 65
anyone who put sqroot65 is wrong and would of lost 1 mark
I agree with all that you have put.Post rating:1 
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 9
 18052016 15:12
(Original post by Sniperdon227)
The q 'stated' (xa)^2 + (yb)^2 = k
where 'k' = r^2 = 65
anyone who put sqroot65 is wrong and would of lost 1 markPost rating:3 
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 10
 18052016 15:13
(Original post by UbaidS)
how did you get 65 for 5aPost rating:4 
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 11
 18052016 15:13
(Original post by saaidq)
It should be 34right?Post rating:2 
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 12
 18052016 15:14
(Original post by saaidq)
It should be 34right? 
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 13
 18052016 15:14
(Original post by UbaidS)
shouldnt it be 34?!
You can only complete the sq when they give you x^2 +y^2 +6x+8y+3=0 to find the radius, in this case they gave two coordinates!
by the way that x^2 + y^2 .... was made upLast edited by Sniperdon227; 18052016 at 15:15. Reason: disclaimerPost rating:2 
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 14
 18052016 15:15
(Original post by xs4)
AB 5x+3y+3=0
Hence the parallel line should have the same gradient correct?Post rating:1 
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 15
 18052016 15:16
(Original post by Sniperdon227)
If you can justify why it was 34 ill give you a cookie!
You can only complete the sq when they give you x^2 +y^2 +6x+8y+3=0 to find the radius, in this case they gave two coordinates!
by the way that x^2 + y^2 .... was made up 
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 16
 18052016 15:17
(Original post by rit101)
nope pretty sure the top students in my sixth form got root65 as the radius
Yalll mandemPost rating:3 
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 17
 18052016 15:18
(Original post by Rit101)
You got root65 like me? For the radius?
where r= sqroot65 correct 
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 18
 18052016 15:19
Okay, I've added a little bit.
1) a)Asked to work out gradient of a parallel line, m=  3/2
b) Asked to find coordinates of B, B(  3,4)
c) Asked to find K, K=  30
2) a) simplify (3√5)^2 = 45
b) Put ((3√5)^2 + √5) / (7 + 3 √5) into m + n√5= 75  32√5
3) a) y=(x7/2)^2  41/4
b) Translation of (1/2 , 41/4)
4) a) show that (x+3) was a factor of x^3  5x^2 8x + 48. p(3) = 3^3  5 * 3^2  8 * 3 + 48 = 0. As p(3) = 0, (x+3) is a factor of p(x).
b) Three linear factors goes to (x+3)(x4)(x4)
c) find the remainder when x^3  5x^2 8x + 48 was divided by (x+2) R=20
d) factorise p(x) using your answer to part c) as R = (x2)(x^23x+14) + 20
5) a) asked to find equation of circle (x5)^2+(y+3)^2=65 (note 65 = r^2)
b) asked to find coordinates of B (AB is diameter) B ( 12, 7)
c) asked to find the equation of the tangent at A 7x4y+18=0
d) asked to find the length of CT = 9
6) a)
7) a) I think there were 4 parts to this question I can't remember part a and b
b)
c) Definite integral (from 1 to 2) = 81/4 (20.25)
d) Area of shaded region (integral  triangle area) = 45/4 (11.25)
8) a) can't remember anything except the answers were k>6 and k<3/2 (NOT 6 > k > 3/2 )
Answers that need a question to be assigned to
 Q(5/4), y=32x40, upside down positive graph passing through y axis at 8
 k=4 and k=20
 x = 1±√5
 d^2y/dx^2=  2x  9x^2 sub in xcoord of p to get 45, 45>0 therefore minimumLast edited by timtjtim; 18052016 at 15:24. 
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 19
 18052016 15:19
(Original post by Rit101)
Nope pretty sure the top students in my Sixth Form got root65 as the radius
root65 is the radius however writing it in the form asked for, it is r squared 
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 20
 18052016 15:19
(Original post by Rit101)
This means that the gradient of AB was 3/5
Hence the parallel line should have the same gradient correct?Post rating:1
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Updated: May 27, 2016
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