C2 unofficial answers Watch

don't cry-craft
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#81
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#81
(Original post by PrinceAli)
For the trig I used both a cast diagram and a sin graph to help me answer it, will that be accepted?
I got the answer right but i didnt make it obvious that i used CAST
Omg I used both too. I drew the CAST and then used the graphs to double check my answers. Hope it is okay
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AstarAstarA
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#82
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#82
(Original post by nihil_nimis)
am I the only one who found C1 easier than C2 ?
Yes
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Naruke
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#83
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#83
was there a radians question??

did I miss a page??
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AstarAstarA
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#84
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#84
(Original post by Naruke)
was there a radians question??

did I miss a page??
Question 10, the last question used radians for the perimeter and area
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mkeshefkhan
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#85
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#85
(Original post by AstarAstarA)
Geometric:
b) 256
c) 1.601

Binomial:
A = 16
k = 7/2
B = 936

Integration:
S = 24.3

Trapezium:
a) 7
b) 20.75
c) R = 5.75

Factor theorem:
a) 5
c) (x + 2)(3x + 2)(2x - 1)

Differentiation(Q10):
a) 1/3PIx^2
d) Minimum = 120m
c) x = 16.63... => f''(x) = 0.437 > 0

Trig identities:
a) Theta = 8/15Pi , -2/15Pi
b) x = 194.5, 345.5

Circle:
a) root(34)
c) 3x + 5x - 95 = 0

Log:
i) (a - 5)/9
ii) -2.19
Geometric part c) is actually 1.602 to 3 decimal places
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imran_
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#86
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#86
SOMEONE PLEASE ANSWER, FOR THE MINIMUM VALUE OF P MY X VALUE WAS CORRECT HOWEVER I DID NOT SUB IT INTO P HOW MANY MARKS WILL I LOSE? LOOKING AT THIS MARK SCHEME IT SEEMS LIKE ONLY 1 BUT I CAN BE WRONG

https://c4a3f001dcd45afe69d0ceec8300...%20Edexcel.pdf
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AstarAstarA
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#87
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#87
(Original post by imran_)
SOMEONE PLEASE ANSWER, FOR THE MINIMUM VALUE OF P MY X VALUE WAS CORRECT HOWEVER I DID NOT SUB IT INTO P HOW MANY MARKS WILL I LOSE? LOOKING AT THIS MARK SCHEME IT SEEMS LIKE ONLY 1 BUT I CAN BE WRONG

https://c4a3f001dcd45afe69d0ceec8300...%20Edexcel.pdf
A1 definitely but no more than 2
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Dieselblue
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#88
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#88
I think I've lost 5 marks max, a few on question 1, even though I did ar^(10-1) - ar^(9-1) I got -0.025 and the other for the proof of the perimeter even though I got y= 500/x -x/12(4Pi +3root3)
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erfanullah
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#89
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#89
http://www.ipetitions.com/petition/a...aths-solutions

COME ON GUYS SIGN THE PETITION TO ALLOW ARSEY TO RELLEASE EDEXCEL A LEVEL MATHS SOLUTIONS YEAR ON YEAR !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!
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NotNotBatman
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#90
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#90
(Original post by nihil_nimis)
No, i think it said 3 decimal places
(Original post by AstarAstarA)
3 decimal places anyone?
ahh, :angry: this has happened twice now, in fp1, now in c2. I can't believe I'm going to lose a mark for that.
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Saywhatyoumean
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#91
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#91
(Original post by tripleseven)
i did this and got 1.602.. to 3d.p... anyone else got 1.602 or most got 1.601?
I got 1.602!


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Saywhatyoumean
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#92
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#92
For q9 x= 16.63, did the x need to be to the nearest metre or something, I thought they just wanted the perimeter to the nearest meter but can't remember what the question said


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10moxoma
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#93
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#93
what was the logs question?
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NotNotBatman
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#94
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#94
(Original post by Saywhatyoumean)
For q9 x= 16.63, did the x need to be to the nearest metre or something, I thought they just wanted the perimeter to the nearest meter but can't remember what the question said


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No, just the perimeter, which was 120, I think.
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TeeEm
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#95
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#95
http://www.thestudentroom.co.uk/show....php?t=4117033
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KappaRoss
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#96
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#96
(Original post by richpanda)
i got -2.19.

anyone get 9b+5 for a in terms of b?
the question asked for b in terms of a so b=. the answer was b=(a-5)/9
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TheRandomGenius
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#97
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#97
(Original post by AstarAstarA)
Geometric:
b) 256
c) 1.601

Binomial:
A = 16
k = 7/2
B = 936

Integration:
S = 24.3

Trapezium:
a) 7
b) 20.75
c) R = 5.75

Factor theorem:
a) 5
c) (x + 2)(3x + 2)(2x - 1)

Differentiation(Q10):
a) 1/3PIx^2
d) Minimum = 120m
c) x = 16.63... => f''(x) = 0.437 > 0

Trig identities:
a) Theta = 8/15Pi , -2/15Pi
b) x = 194.5, 345.5

Circle:
a) root(34)
c) 3x + 5x - 95 = 0

Log:
i) (a - 5)/9
ii) -2.19
Pretty sure 1c rounded to 1.602...
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Jasondazza
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#98
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#98
(Original post by SeminMeminDemon)
What did you get for the Logs?
one of the solutions were unsolvable since 2^0 = x
and the other solution was -2.19
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Jasondazza
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#99
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#99
(Original post by TheRandomGenius)
Pretty sure 1c rounded to 1.602...
yep i got 1.602
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ethanol99
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#100
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#100
(Original post by AstarAstarA)
Geometric:
b) 256
c) 1.601

Binomial:
A = 16
k = 7/2
B = 936

Integration:
S = 24.3

Trapezium:
a) 7
b) 20.75
c) R = 5.75

Factor theorem:
a) 5
c) (x + 2)(3x + 2)(2x - 1)

Differentiation(Q10):
a) 1/3PIx^2
d) Minimum = 120m
c) x = 16.63... => f''(x) = 0.437 > 0

Trig identities:
a) Theta = 8/15Pi , -2/15Pi
b) x = 194.5, 345.5

Circle:
a) root(34)
c) 3x + 5x - 95 = 0

Log:
i) (a - 5)/9
ii) -2.19
Can you become the new Arsey, now he's not producing solutions any more?
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