pearson edexcel centre number candidate number level 3 gce … · 2019-04-20 · 5. a student’s...
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Centre Number Candidate Number
Write your name hereSurname Other names
Total Marks
Paper Reference
*P58346A0148*P58346A©2018 Pearson Education Ltd.
1/1/1/1/1/
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Candidates may use any calculator allowed by the regulations of the Joint Council for Qualifications. Calculators must not have the facility for symbolic algebra manipulation, differentiation and integration, or have retrievable mathematical formulae stored in them.
Instructions• Use black ink or ball-point pen.• If pencil is used for diagrams/sketches/graphs it must be dark (HB or B). • Fill in the boxes at the top of this page with your name, centre number and candidate number.• Answer all questions and ensure that your answers to parts of questions are clearly labelled.• Answer the questions in the spaces provided – there may be more space than you need.• You should show sufficient working to make your methods clear. Answers without working may not gain full credit.• Answers should be given to three significant figures unless otherwise stated.
Information• A booklet ‘Mathematical Formulae and Statistical Tables’ is provided.• There are 15 questions in this question paper. The total mark for this paper is 100. • The marks for each question are shown in brackets – use this as a guide as to how much time to spend on each question.
Advice• Read each question carefully before you start to answer it.• Try to answer every question.• Check your answers if you have time at the end.
MathematicsAdvanced SubsidiaryPaper 1: Pure Mathematics
Wednesday 16 May 2018 – MorningTime: 2 hours 8MA0/01
You must have:
Mathematical Formulae and Statistical Tables, calculator
Pearson Edexcel
Level 3 GCE
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Answer ALL questions. Write your answers in the spaces provided.
1. Find
23
6 13x x x− +⎛⎝⎜
⎞⎠⎟∫ d
giving your answer in its simplest form.(4)
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Question 1 continued
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(Total for Question 1 is 4 marks)
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2. (i) Show that 2 x + 17 0 for all real values of x(3)
(ii) “If I add 3 to a number and square the sum, the result is greater than the square of the original number.”
State, giving a reason, if the above statement is always true, sometimes true or never true.(2)
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Question 2 continued
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(Total for Question 2 is 5 marks)
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3. Given that the point A has position vector 4i j and the point B i j,
(a) find the vector AB,(2)
(b) find AB
Give your answer as a simplified surd.(2)
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Question 3 continued
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(Total for Question 3 is 4 marks)
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4. The line l1 has equation 4y x = 10
The line l2
Determine, giving full reasons for your answer, whether lines l1 and l2 are parallel, perpendicular or neither.
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Question 4 continued
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(Total for Question 4 is 4 marks)
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5. A student’s attempt to solve the equation 2 log2 x 2 x = 3 is shown below.
2 log2 x 2 x = 3
2 log2 xx
⎛⎝⎜
⎞⎠⎟ = 3 using the subtraction law for logs
2 log2 x( ) = 3 simplifying
log2 x = 3 using the power law for logs
x = 32 = 9 using the definition of a log
(a) Identify two errors made by this student, giving a brief explanation of each.(2)
(b) Write out the correct solution.(3)
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Question 5 continued
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(Total for Question 5 is 5 marks)
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6.
P
xO
P = 100 x 9)2
Figure 1
A company makes a particular type of children’s toy.
The annual profit made by the company is modelled by the equation
P = 100 x 9)2
where P is the profit measured in thousands of pounds and x is the selling price of the toy in pounds.
A sketch of P against x is shown in Figure 1.
Using the model,
(2)
(b) find, according to the model, the least possible selling price for the toy.(3)
The company wishes to maximise its annual profit.
State, according to the model,
(c) (i) the maximum possible annual profit,
(ii) the selling price of the toy that maximises the annual profit.(2)
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Question 6 continued
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(Total for Question 6 is 7 marks)
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7. In a triangle ABC, side AB has length 10 cm, side AC BAC = where is measured in degrees. The area of triangle ABC 2
(a) Find the two possible values of cos (4)
Given that BC is the longest side of the triangle,
(b) find the exact length of BC. (2)
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Question 7 continued
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(Total for Question 7 is 6 marks)
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8. A lorry is driven between London and Newcastle.
In a simple model, the cost of the journey £C when the lorry is driven at a steady speed of v kilometres per hour is
C = v
+ 211
v + 60
(a) Find, according to this model,
(i) the value of v that minimises the cost of the journey,
(ii) the minimum cost of the journey. (Solutions based entirely on graphical or numerical methods are not acceptable.)
(6)
(b) Prove by using dd
2
2
Cv
that the cost is minimised at the speed found in (a)(i).(2)
(c) State one limitation of this model.(1)
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(Total for Question 8 is 9 marks)
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9. g(x) = 4x3 x2 x
(a) Use the factor theorem to show that (x + 2) is a factor of g(x).(2)
(b) Hence show that g(x) can be written in the form g(x) = (x + 2) (ax + b)2, where a and b are integers to be found.
(4)
y
O x
y = g(x)
Figure 2
Figure 2 shows a sketch of part of the curve with equation y = g(x)
(c) Use your answer to part (b), and the sketch, to deduce the values of x for which
(i) g(x) 0
(ii) g(2x) = 0(3)
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(Total for Question 9 is 9 marks)
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10. Prove, from first principles, that the derivative of x3 is 3x2
(4)
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(Total for Question 10 is 4 marks)
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11. (a) Find the first 3 terms, in ascending powers of x, of the binomial expansion of
216
9
−⎛⎝⎜
⎞⎠⎟
x
giving each term in its simplest form.(4)
f(x) = (a + bx) 216
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−⎛⎝⎜
⎞⎠⎟
x, where a and b are constants
Given that the first two terms, in ascending powers of x, in the series expansion of f(x) x,
(b) find the value of a,(2)
(c) find the value of b.(2)
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(Total for Question 11 is 8 marks)
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12. (a) Show that the equation
4 cos tan
can be written in the form
6 cos2 (4)
(b) Hence solve, for 0 x 90°
4 cos 3x x tan 3x
giving your answers, where appropriate, to one decimal place. (Solutions based entirely on graphical or numerical methods are not acceptable.)
(4)
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(Total for Question 12 is 8 marks)
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13.
log10V
t
l
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Figure 3
The value of a rare painting, £V, is modelled by the equation V = pqt, where p and q are constants and t is the number of years since the value of the painting was first recorded
The line l shown in Figure 3 illustrates the linear relationship between t and log10V since
The equation of line l is log10V t
(a) Find, to 4 significant figures, the value of p and the value of q.(4)
(b) With reference to the model interpret
(i) the value of the constant p,
(ii) the value of the constant q.(2)
(c) Find the value of the painting, as predicted by the model, on 1st January 2010, giving your answer to the nearest hundred thousand pounds.
(2)
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(Total for Question 13 is 8 marks)
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14. The circle C has equation
x2 + y2 x + 10y + 9 = 0
(a) Find
(i) the coordinates of the centre of C
(ii) the radius of C(3)
The line with equation y = kx, where k is a constant, cuts C at two distinct points.
(b) Find the range of values for k.(6)
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(Total for Question 14 is 9 marks)
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15.y
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Not to scale
Figure 4
Figure 4 shows a sketch of part of the curve C with equation
y = 32
2x + 3x x 0
The point P (4, 6) lies on C. The line l is the normal to C at the point P.
The region R, shown shaded in Figure 4, is bounded by the line l, the curve C, the line with equation x = 2 and the x-axis.
Show that the area of R is 46 (Solutions based entirely on graphical or numerical methods are not acceptable.)
(10)
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(Total for Question 15 is 10 marks)
TOTAL FOR THE PAPER: 100 MARKS