Answer to Question #50049 in Complex Analysis for tole

Question #50049
Determine whether infinity is a singularity of the given function or not. if it is a singularity, find the laurent expansion at infinity

1- f(z) = [ z^3 + z + 1 ] / [1+z^2]

2- g(z) = z. sin (1/z)
1
Expert's answer
2014-12-18T08:39:57-0500
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