0459 ADDITIONAL MATHEMATICS (BES) MARK SCHEME for the May/June 2014 series

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CAMBRIDGE INTERNATIONAL EXAMINATIONS
0459 ADDITIONAL MATHEMATICS (BES)
0459/01
Paper 1, maximum raw mark 80
This mark scheme is published as an aid to teachers and candidates, to indicate the requirements of
the examination. It shows the basis on which Examiners were instructed to award marks. It does not
indicate the details of the discussions that took place at an Examiners’ meeting before marking began,
which would have considered the acceptability of alternative answers.
Mark schemes should be read in conjunction with the question paper and the Principal Examiner
Report for Teachers.
Cambridge will not enter into discussions about these mark schemes.
Cambridge is publishing the mark schemes for the May/June 2014 series for most IGCSE, GCE
Advanced Level and Advanced Subsidiary Level components and some Ordinary Level components.
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MARK SCHEME for the May/June 2014 series
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er
International General Certificate of Secondary Education
Page 2
1
Mark Scheme
IGCSE – May/June 2014
B1
M1
ft their brackets
y = x3 – 2x2 – 5x + 6
A1
cao
M1
x2 – 1 or (x + 1)(x – 1) in denom of
2-layered fraction
M1
A1
attempt factorise [ 2 quad expns
correctly factorise [ 2 quad expns
1
isw
( x − 2)( x − 1)
A1
No. of J & F
Total
= 97 or 0.735 (3 sf)
132
M1
Attempt P(F) and P(F | J)
P(F) = 72
132
P(F | J) = 30 one correct
55
6
Both =
11
Because these are equal, A & B are indep
M1
A = (2.25 2.35)
 8500 

C = 
 9400 
B1
=
3
(i)
(ii)
4
(i)
(ii)
Paper
01
y = (x + 2)(x – 1)(x – 3)
(x2 + x – 2) or (x2 – 4x + 3) or (x2 – x – 6)
x 2 − 2x − 3 × 1
x 2 − 5x + 6 x 2 − 1
( x − 3)( x + 1)
1
=
×
( x − 2)( x − 3) ( x + 1)( x − 1)
2
Syllabus
0459
attempted
A1
A1
A1
A1
attempt P(J) and P(J | F)
P(J) = 55
132
P(J | F) = 30
72
5
Both =
12
Because these are equal, A & B are
indep
B1
0   8500 
 0.020


A = (2.25 2.35) 
0.018   9400 
 0
 8500 
 or
= (0.045 0.0423) 
 9400 
 170 

(2.25 2.35) 
169.2 
= 780.12 or 780 (3 sf)
M1
A1
A1
first pair conformable and their
product of correct shape
correct figures and shape in first
product
dep all three mats conformable
© Cambridge International Examinations 2014
Page 3
5
2 + 2i or 2(1 + i)
B1
or 2√2cis π
4
(ii)
2 i or 0 + 2 i
B2
B2 for
M1
ft their (i) and (ii)
(i)
(ii)
7
(i)
(ii)
8
Syllabus
0459
(i)
(iii)
6
Mark Scheme
IGCSE – May/June 2014
2 + 2i + 2i
2
2+ 2
i or 1 + 1.71i (3 sf)
=1+
2
B1
M1
M1
B1
seen or implied
M1
or –4 = –1 × 1 + c ft their gradient
A1
cao
M1
(= 1 oe)
5
M1
P(X = 4) = 1 – ( 1 + 1 + 2 ) (= 3 oe)
10 5 5
10
M1
1 , 1, 3
10 5 10
A1
(1 + 2 )
2
4− 2
3+ 2 2
=3+ 2 2
×
16 − 11 2
3−2 2
3−2 2
dep M1
A1
grad = – 1
2
y – 1 = – 1 (x + 5) oe
2
1
y = – x – 3 oe
2
2
Σxp attempted
=4
Σx2p attempted (= 17)
– “4”2
=1
2 i; B1 for ki (k ≠ 2 or 0)
A1
Centre (–4, 3) stated or implied
(x + 4)2 + (y – 3)2
=5
x2 + 8x + 16 + y2 – 6y + 9 = 5
x2 + y2 + 8x – 6y + 20 = 0
P(X = 2) = 2 × 1 (= 1 oe)
5 4
10
3
2
1
P(X = 3) = × × + 3 × 2 × 1
5 4 3 5 4 3
Paper
01
M1
A1ft
M1
M1
A1ft
correct products for any two of
P(X = 2), P(X = 3), P(X = 4) M1M1
1 – ( 2 + sum of two attempted
5
P(X = n)) M1
all three probs correct
dep previous M1 and +ve result
2 )2 = 3 – 2 2
B1
or (1 –
M1
Mult numerator and denominator by
3 – 2 2 or (1 – 2 )2
A1
A1
A1 for numerator = 16 − 11 2
A1 for denominator = 1 oe
© Cambridge International Examinations 2014
Page 4
9
10 (a)
Mark Scheme
IGCSE – May/June 2014
Eliminate x or y
4x2 – x – 5 = 0 or 4y2 – 45y = 0
Factorise quadratic
5
x=
and –1
4
45
and 0
y=
4
M1
A1
M1
sin2A = –0.5 or sin330o or sin210o
105o
165o
M1
A1
A1
(b) (i) sinP = 4 or cosQ = 12
5
13
4
12 3 5
their × their + ×
5
13 5 13
63
65
(ii)
11
Syllabus
0459
5
+2
12
5
1− × 2
12
29
oe
2
Paper
01
A1
A1
answer(s) only do(es) not score
B1
M1
A1
answer only does not score
M1
A1
answer only does not score
(i)
−2
B1
(ii)
f [ –9
B1
allow y [ –3 or [–3, ∞)
y + 9 seen
M1
may be implied by next mark
x + 9 seen
M1
interchanging x and y
(iii)
–1
f (x) = –2 +
(iv)
x + 9 oe
Correct domain
Correct use of mod
Cusp at (1, 0)
A1
B1
B1
B1
Allow unlabelled cusp on +ve x-axis
© Cambridge International Examinations 2014
Page 5
12
(i)
(ii)
Mark Scheme
IGCSE – May/June 2014
Syllabus
0459
M1
−4i + 2j
2 5 or
20 or 4.47 (3 sf)
M1
(iii)
They are collinear or equivalent
B1
(iv)
OD = 4i – 2j
B1
OE = (their OD )
1.6i – 0.8j
M1
A1
A1
Correct change of base to
( )
3
log b a 2
log b c
log b a
2
or They all lie on the same straight
line.
B1
B1
log b a 3 − log b c
M1
a
log b
 c




A1
32x – 3 × 3x – 4 = 0
(3x + 1)(3x – 4)
3x = 4
M1
M1
A1
1.26(18……) or log34 only
A1
3
(b)
May be implied by answer
A1
12i − 6j
1
k =−
3
13 (a)
Paper
01
allow substituted letters for 3x
ignore other soln, if given, for this
A1
3x = –1must be discarded for last A1
© Cambridge International Examinations 2014
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