CBSS 2024 Sec 4 AM PRELIM P2

CANBERRA SECONDARY SCHOOL 2024 Preliminary Examination Secondary Four Express ADDITIONAL MATHEMATICS 26 Aug 2024 4049/02 2 hours 15 minutes 1130h — 1345h Name: ______________________________________ ( ) Class: ________ READ THESE INSTRUCTIONS FIRST Write your full name, class and index number on all work you hand in. Write in dark blue or black pen. You may use a pencil for any diagrams or graphs. Do not use staples, paper clips, highlighters, glue or correction fluid. Answer all the questions. Give non-exact numerical answers correct to 3 significant figures, or 1 decimal place in the case of angles in degrees, unless a different level of accuracy is specified in the question. The use of an approved scientific calculator is expected, where appropriate. You are reminded of the need for clear presentation in your answers. The number of marks is given in brackets [ ] at the end of each question or part question. The total number of marks for this paper is 90. _________________________________________________________________________________ This question paper consists of 22 printed pages including the cover page. Setter: Mr Muhamad Lathif FOR MARKER’S USE Marks Awarded Max Marks Total 90 O

2 Canberra Secondary School Additional Mathematics 4049/02 2024 Preliminary Examination Secondary 4 Express Mathematical Formulae 1. ALGEBRA Quadratic Equation For the equation ,0,02 =++ acbxax .2 42 a acbbx −−= Binomial expansion nrrnnnnn bbar nbanbanaba ++     ++     +     +=+ −−− ......21)( 221 , where n is a positive integer and ! )1)...(1( !!)( ! r rnnn rrn n r n +−−=−=      . 2. TRIGONOMETRY Identities sin² A + cos² A = 1 sec² A = 1 + tan² A cosec² A = 1 + cot² A sin (A  B) = sin A cos B  cos A sin B cos (A  B) = cos A cos B  sin A sin B BA BABA tantan1 tantan)tan(  = sin 2A = 2sin Acos A cos 2A = cos2 A – sin2 A = 2cos2 A – 1 = 1 – 2sin2 A tan 2A = A A 2tan1 tan2 − Formulae for ABC C c B b A a sinsinsin == . a² = b² + c² − 2bc cos A.  = Cab sin2 1

3 Canberra Secondary School Additional Mathematics 4049/02 2024 Preliminary Examination Secondary 4 Express Answer all the questions 1 A curve has an equation 2 2 1.y x x=+ (a) Show that 21 dy ax b dx x += + , where a and b are positive integers. [2] (b) Hence, find 31 . 21 x dx x + + [2] [Turn Over

4 Canberra Secondary School Additional Math