A-level Mathematics Question Paper MFP3 Further Pure 3

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Question
General Certificate of Education
Advanced Level Examination
June 2010
Mark
1
2
3
Mathematics
MFP3
5
Unit Further Pure 3
Friday 11 June 2010
4
6
9.00 am to 10.30 am
7
For this paper you must have:
*
the blue AQA booklet of formulae and statistical tables.
You may use a graphics calculator.
TOTAL
Time allowed
*
1 hour 30 minutes
Instructions
*
Use black ink or black ball-point pen. Pencil should only be used for
drawing.
*
Fill in the boxes at the top of this page.
*
Answer all questions.
*
Write the question part reference (eg (a), (b)(i) etc) in the left-hand
margin.
*
You must answer the questions in the spaces provided. Do not write
outside the box around each page.
*
Show all necessary working; otherwise marks for method may be
lost.
*
Do all rough work in this book. Cross through any work that you do
not want to be marked.
Information
*
The marks for questions are shown in brackets.
*
The maximum mark for this paper is 75.
Advice
*
Unless stated otherwise, you may quote formulae, without proof,
from the booklet.
(JUN10MFP301)
P27889/Jun10/MFP3 6/6/
MFP3
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2
Answer all questions in the spaces provided.
The function yðxÞ satisfies the differential equation
1
dy
¼ f ðx, yÞ
dx
where
and
(a)
f ðx, yÞ ¼ x þ 3 þ sin y
yð1Þ ¼ 1
Use the Euler formula
yrþ1 ¼ yr þ hf ðxr , yr Þ
with h ¼ 0:1 , to obtain an approximation to yð1:1Þ , giving your answer to four
decimal places.
(3 marks)
(b)
Use the formula
yrþ1 ¼ yr1 þ 2hf ðxr , yr Þ
with your answer to part (a), to obtain an approximation to yð1:2Þ , giving your
answer to three decimal places.
(3 marks)
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2 (a)
Find the value of the constant k for which k sin 2x is a particular integral of the
differential equation
d2 y
þ y ¼ sin 2x
dx 2
(b)
Hence find the general solution of this differential equation.
(3 marks)
(4 marks)
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ð1
3 (a)
Explain why
4xe4x dx is an improper integral.
(1 mark)
1
ð
(b)
Find
4xe4x dx .
ð1
(c)
Hence evaluate
(3 marks)
4xe4x dx , showing the limiting process used.
(3 marks)
1
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8
4
By using an integrating factor, find the solution of the differential equation
3
dy 3
þ y ¼ ðx 4 þ 3Þ2
dx x
1
given that y ¼ 5 when x ¼ 1 .
(9 marks)
QUESTION
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Write down the expansion of cos 4x in ascending powers of x up to and including
(2 marks)
the term in x 4 . Give your answer in its simplest form.
5 (a)
(b) (i)
Given that y ¼ lnð2 e x Þ , find
dy d2 y
d3 y
, 2 and 3 .
dx dx
dx
ðYou may leave your expression for
d3 y
unsimplified.Þ
dx3
(6 marks)
(ii) Hence, by using Maclaurin’s theorem, show that the first three non-zero terms in the
expansion, in ascending powers of x, of lnð2 e x Þ are
(c)
x x 2 x 3
(2 marks)
x lim x lnð2 e Þ
x ! 0 1 cos 4x
(3 marks)
Find
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The polar equation of a curve C1 is
6
r ¼ 2ðcos y sin yÞ,
(a) (i)
0 4 y 4 2p
Find the cartesian equation of C1 .
(4 marks)
(ii) Deduce that C1 is a circle and find its radius and the cartesian coordinates of its
centre.
(3 marks)
The diagram shows the curve C2 with polar equation
(b)
r ¼ 4 þ sin y,
0 4 y 4 2p
O
(i)
Initial line
Find the area of the region that is bounded by C2 .
(6 marks)
(ii) Prove that the curves C1 and C2 do not intersect.
(4 marks)
(iii) Find the area of the region that is outside C1 but inside C2 .
(2 marks)
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18
1
Given that x ¼ t 2 , x > 0 , t > 0 and y is a function of x, show that:
7 (a)
(i)
1 dy
dy
¼ 2t 2 ;
dx
dt
(2 marks)
(ii)
d2 y
d2 y
dy
¼
4t
þ2 .
2
2
dx
dt
dt
(3 marks)
1
(b)
Hence show that the substitution x ¼ t 2 transforms the differential equation
x
d2 y
dy
2
þ 12x 3 y ¼ 12x 5
ð8x
þ
1Þ
2
dx
dx
into
d2 y
dy
4 þ 3y ¼ 3t
2
dt
dt
(c)
(2 marks)
Hence find the general solution of the differential equation
x
d2 y
dy
2
ð8x
þ
1Þ
þ 12x 3 y ¼ 12x 5
2
dx
dx
giving your answer in the form y ¼ f ðxÞ .
(7 marks)
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