Question: 1. Simplify (r) + x) cosh (2 log I) for r * 0. (Show all working) (x4 + 1) cosh (log I) 2. Use logarithmic

.3. Let 2 = 1 + 62 and w =5 -32. Without

1. Simplify (r") + x) cosh (2 log I) for r * 0. (Show all working) (x4 + 1) cosh (log I) 2. Use logarithmic differentiation to find y', given y = 42 ed logr .3. Let 2 = 1 + 62 and w =5 -32. Without using a calculator, determine (a) zw + Ew; (b) 3m 4. Without using a calculator (or Wolfram Alpha), determine all solutions of 22 + (4 + 62) z + 20 + 12i = 0. (Hint: Use the quadratic formula.)

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