Questions asked by Henry W.
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Suppose that z = x + yi, where x and y are real numbers. If
(iz-1)/(z-i)
is a real number, show that when (x, y) do not equal (0, 1),
x^2
+
y^2
= 1?
Addition operations in polar form?
sqrt(18)(cos175°+isin175°)+(cos40°+isin40°)
Finding the locus of a complex number?