A_Level_H2_Math_Victoria_JC2_Prelim_2019

2 1 Express 12 71 xx  as a single simplified fraction. [1] Without using a calculator, solve 12 71 xx  . [3] 2 (i) Find  12d tand xx  . [1] (ii) Hence, or otherwise, evaluate  1 12 0 tan dxx x    exactly. [3] 3( i) Find  2d 32d xxx .[ 2] (ii) Find the equation of the tangent to the curve 232 xyx at the point where 1x  , giving your answer in exact form. [3] 4 The graph for f( )yx is given below, where 10yx , 6y  and 4x  are asymptotes. The turning points are ( 3, 5) and (6, 0) , and the graph intersects the y-axis at 0,6 . On separate diagrams, sketch the graphs of (i) f( )yx ,[ 3] (ii) 1 f( )y x . [3] y O x 0,6 +0DWK3UHOLP9-& www.KiasuExamPaper.com 860

3 [Turn over 5 Referred to the origin O, points P and Q have position vectors 3a and a + b respectively. Point M is a point on QP extended such that PM:QM is 2:3. (i) Find the position vector of point M in terms of a and b.[ 2] (ii) Find PQ OM    in terms of a and b.[ 3] (iii) State the geometrical meaning of PQ OM PQ       .[ 1] 6 A curve C has equation fyx , where the function f is defined by 2 12 3f: , , 5 , 1 45 xxx x x xx      6 . (i) Find algebraically the range of f. [3] (ii) Sketch C, indicating all essential features. [4] (iii) Describe a pair of transformatio ns which transforms the graph o f C on to the graph of 2 9 6 xy xx   .[ 2] 7 Given that 1sin ln(1 )yx  , where 01 ,x show that 2d(1 ) 1d yxy x  .[ 2] (i) By further differentiation, find the Maclaurin expansion of y in ascending powers of x, up to and including the term in 2x .[ 4] (ii) Use your expansion from (i) and integration to find an approximate expression for sin(ln(1 )) dx xx    . Hence find an approximate value for 0.5 0 sin(ln(1 )) dx xx    .[ 3] www.KiasuExamPaper.com 861

4 8( a) A sequence of numbers 123 6 4,,,,aaa a  is such that 1 ,nnaa d  where 16 3n and is a constantd . The 64 numbers fill the 64 squares in the 88 grid in such a way that 18 to aa fills the first row of boxes from left to right in that order. Similarly, 91 6 to aa fills the second row of boxes from left to right in that order. 1st column 1 2 34567 8 91 0 1 6 aaaaaaaa aa a  # Given that the sums of the numbers in the first rowand in the third columnare 58 and 376 respectively, find the values of 1a and .d [4] (b) A geometric series has first term a and common ratio r, where a and r are non-zero. The sum to infinity of the series is 2. The sum of the six terms of this series from the 4 th term to the 9th term is 63 .256 Show that 93512 512 63 0.rr   Find the two possible values of r, justifying the choice of your answers. [5] 9 One of the roots of the equation 3 66 0za z , where a is real, is w. (i) Given that 2iwb — , where b is real, find the exact values of a and * w w .[ 6] (ii) Given instead that iewr  , where 30, 4r     , find 2 66aw w and