A Level Mathematics Questionbanks
= (100)(300) cos 300t = 30000 cos 300t Vs-1 M1 A1. When t = 0.015 s, = 30000 cos(300 ( 0.015) = 30000 cos 4.5 = -6324 Vs-1 M1 A1 [4] b) 300t = , M1 A1. t = , A1 (both) [3] 5. a) y = tan 2x = M1 == A1 A1 == 2 sec22x A1 [4] b) When x = , = 2 sec2 = = 8 M1 A1 [2] c) For turning point, = 0. 0 = 2sec2 2x M1. 0 = no solution, since as 0 < cos22x ( 1 ... ................
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