DHS 2021 Y4 Math 2 MYE Answer Key

 DHS 2021 2021 Year 4 Mid-Year Examination Mathematics 2 Answer Key 1 30m or 2m 2 8ac and a > 0. 3 π 3x or 2π 3 4    2 22 25 52 2 111 xx xxx     5 55x ( or 11.2 ) or 1 25x 6 7 6(ii) 35 7x  7(i) 2a , 1b 8 4a , 3b 9(ii) tan 2A or 1tan 2A 10(ii) 0.638k  (3 s.f) 10(iii) As the temperature of the meat is 14.8 C and it exceeds 5 C , it has a high risk of bacterial contamination. 11(a) 5π 7π1, 144y  11(b) oo48.2 , 48.2x 12(a) – 12 13(i) 2p and 12q 13(iia) No. He is wrong as Degree of Remainder  Degree of Divisor Since Divisor is of degree 2, degree of  h x , which is the remainder, is 1 or 0. 13(iib)  g 3 2, h( ) 21 14xx x x   14(ii)  42 s i n 4 5d   14(iii) No. 15(i)  219g( ) 122xx   15(iii) Largest value of k is 1. 15(iv) 1h : 1 92 , ,0 4 . 5xx x x     16(i) 2π 3 16(ii) 2 16(iii)  f2 s i n 3 1x x  16(v) 5 17(i) 3 2 sec 17(iii) 4π40cos 3yx  