Question: Question 4 Let f(z) = 1 1 - a cos a-1 x+|x| x3+27 if x-3 if x = -3 Suppose f is continuous at

Question 4 Let f(z) = 1 1 - a cos a-1 x+|x| x3+27 if x-3 if x = -3 Suppose f is continuous at every point on the whole real line R. Determine the value of a. Question 5 0 Let a > 0. Let x, y > O satisfy the equation +4 = 18. Find dry at (x, y) = (a, 8a). x - dx

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