a. Find the second Taylor's polynomial Pa(x) of the function f(x) = cos a about the point %3D to approximate cos 42° (use 4 digit rounding) (3 marks) 6 To = b. For a function f(x) the forward differences are given by 2o = 4 ffro] = 52 f(ro, 21] = 9 %3D 21 = 5 f(æ1] =? f(ro, T1, x2] = 1.5 f(r1, r2] =? 22 = 6 f[r2] =? Find the missing entries in the table. (3 marks)

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