Edexcel GCE Core 1 Mathematics C1 may 2005 6663/01 question paper

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N23491CW850/R6663/57570 7/7/3/3/3/2/2/3

Paper Reference(s)

6663/01

Edexcel GCECore Mathematics C1

Advanced Subsidiary

Monday 23 May 2005 – Morning

Time: 1 hour 30 minutes

Materials required for examination Items included with question papers

Mathematical Formulae (Green) Nil

Calculators may NOT be used in this examination.

Instructions to Candidates

In the boxes above, write your centre number, candidate number, your surname, initials and signature.Check that you have the correct question paper.You must write your answer for each question in the space following the question.

Information for Candidates

A booklet ‘Mathematical Formulae and Statistical Tables’ is provided.Full marks may be obtained for answers to ALL questions.The marks for individual questions and the parts of questions are shown in round brackets: e.g. (2).There are 10 questions in this question paper. The total mark for this paper is 75. There are 24 pages in this question paper. Any blank pages are indicated.

Advice to Candidates

You must ensure that your answers to parts of questions are clearly labelled.

You must show sufficient working to make your methods clear to the Examiner. Answers withoutworking may gain no credit.

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1. (a) Write down the value of .

(1)

(b) Find the value of .

(2)

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238

−

138

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Q1

(Total 3 marks)

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2. Given that

(a) find

(2)

(b) find

(3)

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d .y x∫

d,

d

yx

2

46 , 0,y x x

x= − ≠

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Question 2 continued

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Q2

(Total 5 marks)

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3. x2 – 8x – 29 ≡ (x + a)2 + b,

where a and b are constants.

(a) Find the value of a and the value of b.

(3)

(b) Hence, or otherwise, show that the roots of

x2 – 8x – 29 = 0

are c ± d√5, where c and d are integers to be found.

(3)

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Q3

(Total 6 marks)

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4. Figure 1

Figure 1 shows a sketch of the curve with equation y = f(x). The curve passes through the

origin O and through the point (6, 0). The maximum point on the curve is (3, 5).

On separate diagrams, sketch the curve with equation

(a) y = 3f(x),

(2)

(b) y = f(x + 2).

(3)

On each diagram, show clearly the coordinates of the maximum point and of each point

at which the curve crosses the x-axis.

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y

O x

(3, 5)

(6, 0)

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Q4

(Total 5 marks)

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5. Solve the simultaneous equations

x – 2y = 1,

x2 + y2 = 29.

(6)__________________________________________________________________________

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Q5

(Total 6 marks)

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6. Find the set of values of x for which

(a) 3(2x + 1) > 5 – 2x,

(2)

(b) 2x2 – 7x + 3 > 0,

(4)

(c) both 3(2x + 1) > 5 – 2x and 2x2 – 7x + 3 > 0.

(2)

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Q6

(Total 8 marks)

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7. (a) Show that can be written as

(2)

Given that and that at x = 1,

(b) find y in terms of x.

(6)

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23

y =2d (3 )

, 0,d

y x xx x

− √= >

√

1 12 29 6 .x x− − +

2(3 )xx

− √√

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Q7

(Total 8 marks)

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8. The line l1 passes through the point (9, –4) and has gradient .

(a) Find an equation for l1 in the form ax + by + c = 0, where a, b and c are integers.

(3)

The line l2 passes through the origin O and has gradient –2. The lines l1 and l2 intersect

at the point P.

(b) Calculate the coordinates of P.

(4)

Given that l1 crosses the y-axis at the point C,

(c) calculate the exact area of �OCP.

(3)

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Q8

(Total 10 marks)

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9. An arithmetic series has first term a and common difference d.

(a) Prove that the sum of the first n terms of the series is

(4)

Sean repays a loan over a period of n months. His monthly repayments form an arithmetic

sequence.

He repays £149 in the first month, £147 in the second month, £145 in the third month, and

so on. He makes his final repayment in the nth month, where n > 21.

(b) Find the amount Sean repays in the 21st month.

(2)

Over the n months, he repays a total of £5000.

(c) Form an equation in n, and show that your equation may be written as

n2 – 150n + 5000 = 0.

(3)

(d) Solve the equation in part (c).

(3)

(e) State, with a reason, which of the solutions to the equation in part (c) is not a sensible

solution to the repayment problem.

(1)

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12

[2 ( 1) ].n a n d+ −

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Question 9 continued

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Question 9 continued

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Q9

(Total 13 marks)

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10. The curve C has equation

The point P has coordinates (3, 0).

(a) Show that P lies on C.

(1)

(b) Find the equation of the tangent to C at P, giving your answer in the form

y = mx + c, where m and c are constants.

(5)

Another point Q also lies on C. The tangent to C at Q is parallel to the tangent to C at P.

(c) Find the coordinates of Q.

(5)

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3 213

4 8 3.y x x x= − + +

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Question 10 continued

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TOTAL FOR PAPER: 75 MARKS

END

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Q10

(Total 11 marks)

Edexcel GCE Core 1 Mathematics C1 may 2005 6663/01 question paper

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