CAMBRIDGE INTERNATIONAL EXAMINATIONS
International General Certificate of Secondary Education
MARK SCHEME for the October/November 2012 series
0607 CAMBRIDGE INTERNATIONAL MATHEMATICS
0607/02
Paper 2 (Extended), maximum raw mark 40
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 October/November 2012 series for most IGCSE,
GCE Advanced Level and Advanced Subsidiary Level components and some Ordinary Level
components.
Page 2
Mark Scheme
IGCSE – October/November 2012
Syllabus
0607
Paper
02
1
3 y( x − 2 z)
2
B2
B1 for 3( xy − 2 yz ) or y (3 x − 6 z )
2 (a)
12.5
2
B2
M1 for
40
3
B3
M2 for 46 ÷ 1.15 oe or M1 for recognising
46 = 115% soi
[0]8 13
1
B1
3.5
2
B2
Accept 8 13 am and other possible forms of
time of day.
1.4
M1 for
(× 60) oe
24
4
8.1 × 10– 8
2
B2
B1 for 0.81 × 10 −7
5 (a)
16 2
3
(45, 3) or (π/4, 3)
2
B2
M1 for
2
B1B1
8
27
1
oe
2
2
B2
2
B2
 27 
or
or better i.e. B1 for
(3 2 )3  8 
one correct first step.
B1 for log 2 3 − log 4 2 or better
12
2
B2
M1 for y =
1FT
B1FT
x−2
final answer
x −1
2
B2
(i)
 3
 
 5
1
B1
(ii)
(– 2, 1)
1
B1
2
B2
(b)
3 (a)
(b)
(b)
6 (a)
(b)
7 (a)
oe
x
(b)
2
8
9 (a)
(b)
10 (a)
p+
(b)
r oe
p
= cosx or better
8
n
B1 for 1
k
x
FT their k only if
k≠1
k
x
or k x
1
B1
2
B2
9
1
B1
14
2
B2
2 − 1 final answer
k≠1
x −1
1
o.e. If final answer
−
x −1 x −1
spoiled, the M1 is still available
M1 for
M1 for recognising OM soi
e.g. OP + PM
4 2 final answer
(b)
11 (a)
1
2
250
[×100] oe
2000
M1 for ×
2 −1
2 −1
M1 for 22 or 0.52 seen
© Cambridge International Examinations 2012
Page 3
12 (a)
(b)
Mark Scheme
IGCSE – October/November 2012
6
20
18
35
oe
oe
2
B2
3
B3
Syllabus
0607
M1 for
Paper
02
3 2
×
5 4
3 4 2 3
× + ×
5 7 5 7
these products
M2 for
© Cambridge International Examinations 2012
or M1 for either of