ADDITIONAL MATHEMATICS 0606/11
*3081135600*
Cambridge IGCSETM
ADDITIONAL MATHEMATICS Paper 1
You must answer on the question paper. No additional materials are needed.
0606/11 October/November 2020
2 hours
INSTRUCTIONS Answer all questions. Use a black or dark blue pen. You may use an HB pencil for any diagrams or graphs. Write your name, centre number and candidate number in the boxes at the top of the page. Write your answer to each question in the space provided. Do not use an erasable pen or correction fluid. Do not write on any bar codes. You should use a calculator where appropriate. You must show all necessary working clearly; no marks will be given for unsupported answers from a
calculator. Give non-exact numerical answers correct to 3 significant figures, or 1 decimal place for angles in
degrees, unless a different level of accuracy is specified in the question.
INFORMATION The total mark for this paper is 80. The number of marks for each question or part question is shown in brackets [ ].
DC (PQ/FC) 187997/3 ? UCLES 2020
This document has 16 pages. Blank pages are indicated.
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2 Mathematical Formulae
Quadratic Equation For the equation ax2 + bx + c = 0,
1. ALGEBRA
x = -b!
b2 - 4ac 2a
Binomial Theorem
(a + b) n = an + en1oan-1b + en2oan-2b2 + f + enroan-rbr + f + bn
where
n
is
a
positive
integer
and
eno r
=
(n
n! - r)
!r!
Arithmetic series
un = a + (n - 1) d
Sn
=
1 2
n (a
+
l)
=
1 2
n {2a
+
(n
-
1) d}
Geometric series
un = arn-1
Sn
=
a (1 - rn) 1-r
(r ! 1)
S3
=
a 1-r
(r
1 1)
Identities
2. TRIGONOMETRY sin2A + cos2A = 1 sec2A = 1 + tan2A cosec2A = 1 + cot2A
Formulae for ABC
a sin A
=
b sin B
=
c sin C
a2 = b2 + c2 - 2bc cos A
T
=
1 2
bc sin A
? UCLES 2020
0606/11/O/N/20
3 1
y
24
- 2
- 1
0
4
x
The diagram shows the graph of y = p (x) , where p (x) is a cubic function. Find the two possible
expressions for p (x).
[3]
2 (a) Write down the amplitude of 1 + 4 cosb3xl.
[1]
(b) Write down the period of 1 + 4 cosb3xl.
[1]
(c) On the axes below, sketch the graph of y = 1 + 4 cosb3xl for -180? G x? G 180?. y 6 5 4 3 2 1
- 180
- 120
- 60
0
60
120
180 x
[3]
? UCLES 2020
0606/11/O/N/20
[Turn over
4
1
3
(a)
Write
p`qr2j3 `q3pj-1r3
in the form paqbrc, where a, b and c are constants.
[3]
2
1
(b) Solve 6x3 - 5x3 + 1 = 0.
[3]
? UCLES 2020
0606/11/O/N/20
5
4
It is given that
y
=
tan 3x sin x
.
(a)
Find
the
exact
value
of
d y dx
when
x
=
r 3
.
[4]
(b)
Hence
find
the
approximate
change
in
y
as
x
increases
from
r 3
to
r 3
+ h,
where
h
is
small.
[1]
(c) Given that x is increasing at the rate of 3 units per second, find the corresponding rate of change in
y
when
x
=
r 3
,
giving
your
answer
in
its
simplest
surd
form.
[2]
? UCLES 2020
0606/11/O/N/20
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