SAMPLE EXAMINATION PAPER - XtremePapers

And substitute into cos2x = cos2x – sin2x. cos2x = 1 – 2sin2x. sin2x = 1/2(1 – cos2x) Separating variables: M1. Hence y = = A1A1. Substitute x = 0.1, y = 0.2 to obtain c = 0.19966… = 0.200 (3 s.f.) M1. i.e. y = A1 (6) Note: alternative solution using integration by parts: y = 2. a) Expand binomial (1 … ................
................