(a) Let z1 = 1 + √2i and 1 −√2i.
(i) Determine the polar form of z1.
(ii) Determine that the polar form of z2.
(iii) Use the polar forms of z1 and z2 to verify that z1 · z2 = 3
(iv) Use the polar forms of z1 and z2 to verify that −1/3 +2/3√2i =z1/z2
For the function
f(z)=1/(z²(1 + z + 2z2))
,
find the first three terms of the Laurent Series expansion of f about a = 0 that converges
in the deleted disk D'(0, δ) for some δ > 0
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