Questions asked by Henry W.

Questions asked by Henry W.

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