2023 JSS AMATH P1 PRELIM MS

4049/1/GE/23 [Turn Over] O JURONG SECONDARY SCHOOL 2023 GRADUATION EXAMINATION SECONDARY 4 EXPRESS/ SECONDARY 5 NORMAL (ACADEMIC) CANDIDATE NAME CLASS INDEX NUMBER ADDITIONAL MATHEMATICS 4049/01 PAPER 1 22 August 2023 Candidates answer on the Question Paper. 2 hours 15 minutes Additional Materials: Writing Paper (1 sheet) READ THESE INSTRUCTIONS FIRST Write your name, class and index number on all the work you hand in. Write in dark blue or black pen on both sides of the paper. You may use an HB 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. At the end of the examination, fasten all your work securely together. 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. For Examiner’s Use This document consists of 19 printed pages including this page. 90

2 4049/1/GE/23 1. ALGEBRA Quadratic Equation For the equation Binomial expansion , where n is a positive integer, and 2. TRIGONOMETRY Identities Formulae for 02 =++ cbxax a acbbx 2 42−−= nrrnnnnn bbar nbanbanaba ++    ++     +     +=+ −−− ......21)( 221 ! )1)...(1( )!(! ! r rnnn rnr n r n +−−=−=      1cossin 22 =+ AA 22sec 1 tanAA=+ 22cosec 1 cotAA=+ ( ) BABABA sincoscossinsin = ( ) BABABA sinsincoscoscos = ( ) BA BABA tantan1 tantantan  = AAA cossin22sin = AAAAA 2222 sincossin211cos22cos −=−=−= A AA 2tan1 tan22tan − = ABC C c B b A a sinsinsin == Abccba cos2222 −+= Abcsin2 1=

3 4049/1/GE/23 [Turn Over] 1 A curve has an equation 225y x x= − + . (a) Express 225y x x= − + in the form of ( ) 2 a x b c−+ . Hence state the coordinates of the turning point. [3] 2 2 22 2 22 2 2 25 25 2 1125 2 4 4 112 2 5 2 4 4 1 392 48 y x x xx xx xx x = − + = − +     = − + − +            = − + − +        = − + 1 39Turning point: , 48   M1: Factor out the 2 A1 B1: FT from wrong completed square form (b) The line 27yx=+ intersects the curve at points A and B. Find the distance AB. [3] ( ) ( ) ( )( ) ( ) ( ) 2 2 2 2 2 5 1 2 7 2 2 5 2 7 2 3 2 0 2 1 2 0 1 OR 22 11When , 2 7 622 When 2, 2 2 7 11 1Coordinates of intersection are ,6 or 2, 112 1Required distance 2 11 2 y x x yx x x x xx xx xx xy xy = − + −−− = + −−−  − + = + − − = + − =  =− = =− = − + = = = + = − 