(i) Find the first three non-zero terms of the power series expansion of the about the point = 0, Show the region of convergence of the power series and all poles and zeros of f) on the 2 function f(z)- of convergence Argand diagram. (z + j)(z-25) (14 marks) Expand the function f(z) defined above into Laurent series in the annulus (11 marks)
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