Mathematics (JUN13MFP401) General Certificate of Education Advanced Level Examination June Unit Further Pure TOTAL

Transcription

1 Centre Number Candidate Number For Examiner s Use Surname Other Names Candidate Signature Examiner s Initials Mathematics Unit Further Pure 4 Tuesday 18 June 2013 General Certificate of Education Advanced Level Examination June am to am For this paper you must have: the blue AQA booklet of formulae and statistical tables. You may use a graphics calculator. Time allowed 1 hour 30 minutes MFP4 Instructions Use black ink or black ball-point pen. Pencil should only be used for drawing. Fill in the es 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 each question in the space provided for that question. If you require extra space, use an AQA supplementary answer book; do not use the space provided for a different question. 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. You do not necessarily need to use all the space provided. Question TOTAL Mark (JUN13MFP401) 6/6/6/ MFP4

2 2 Answer all questions. Answer each question in the space provided for that question. 1 The points A, B, C and D have position vectors a, b, c and d respectively relative to the origin O, where a ¼ , 6 7 b ¼ 4 4 5, 6 c ¼ and 6 d ¼ (a) ƒ! ƒ! Find AB AC. (3 marks) (b) The points A, B and C lie in the plane P. Find a Cartesian equation for P. (2 marks) (c) ƒ! ƒ! ƒ! Find the volume of the parallelepiped defined by AB, AC and AD. (3 marks) Answer space for question 1 (02)

3 3 Answer space for question 1 Turn over s (03)

4 4 2 The system of equations does not have a unique solution. 2x y z ¼ 3 x þ 2y 3z ¼ 4 2x þ y þ az ¼ b (a) Show that a ¼ 3. (3 marks) (b) Given further that the equations are inconsistent, find the possible values of b. (2 marks) (c) State, with a reason, whether the vectors 4 1 5, and 4 35 are linearly dependent or linearly independent. (1 mark) Answer space for question 2 (04)

5 5 Answer space for question 2 Turn over s (05)

6 6 3 The determinant D is given by x 2 x y 2 y z 2 z D ¼ x y z x 2 þ y 2 þ z 2 x 2 þ y 2 þ z 2 x 2 þ y 2 þ z 2 where x, y and z are distinct real numbers. (a) Express D as a product of one quadratic factor and three linear factors. (6 marks) (b) Deduce that D 6¼ 0. (2 marks) Answer space for question 3 (06)

7 7 Answer space for question 3 Turn over s (07)

8 8 4 Two planes have equations and 2x 2y þ z ¼ 24 x þ 3y þ 4z ¼ 8 They meet in a line L. (a) Find Cartesian equations for the line L. (5 marks) (b) The direction cosines of the line L are given by cos a, cos b and cos g. (i) Find the exact value of each of the direction cosines. (2 marks) (ii) Show that sin 2 a þ sin 2 b þ sin 2 g ¼ 2. (3 marks) Answer space for question 4 (08)

9 9 Answer space for question 4 Turn over s (09)

10 10 5 The matrix M is given by M ¼ (a) Show that l ¼ 2 is an eigenvalue for M, and find the other two eigenvalues. (5 marks) (b) Find an eigenvector that corresponds to l ¼ 2. (3 marks) (c) (i) (ii) The matrix N is given by Show that N ¼ is an eigenvector for N, and find the corresponding eigenvalue. 0 (2 marks) Hence state one eigenvector for the matrix MN, and find the corresponding eigenvalue. (3 marks) Answer space for question 5 (10)

11 11 Answer space for question 5 Turn over s (11)

12 12 Answer space for question 5 (12)

13 13 Answer space for question 5 Turn over s (13)

14 14 6 The plane transformation T is defined by " # " #" # x x T : ¼ 3 2 y y 0 (a) A shape has an area of 3 square units. Find the area of the shape after being transformed by T. (2 marks) (b) (i) Find the equations of all the invariant lines of T. (5 marks) (ii) State the equation of the line of invariant points of T. (1 mark) Answer space for question 6 (14)

15 15 Answer space for question 6 Turn over s (15)

16 16 7 The 3 3 matrices A and B satisfy and k is a constant. 2 k k AB ¼ , where A ¼ (a) Show that AB is non-singular. (1 mark) (b) Find ðabþ 1 in terms of k. (5 marks) (c) Find B 1. (4 marks) Answer space for question 7 (16)

17 17 Answer space for question 7 Turn over s (17)

18 18 8 A line and a plane have equations and x 3 p ¼ y q 3 r: ¼ 10 2 ¼ z 1 1 respectively, where p and q are constants. (a) Show that the line is not perpendicular to the plane. (1 mark) (b) In the case where the line lies in the plane, find the values of p and q. (4 marks) (c) In the case where the angle, y, between the line and the plane satisfies sin y ¼ p 1 ffiffiffi, 6 and the line intersects the plane at z ¼ 2: (i) find the value of p; (5 marks) (ii) find the value of q. (2 marks) Answer space for question 8 (18)

19 19 Answer space for question 8 Turn over s (19)

20 20 Answer space for question 8 END OF S Copyright ª 2013 AQA and its licensors. All rights reserved. (20)