MathematicsEasy53×since 2002Q3179All the points in the set S={α+iα−i:α∈R}(i=−1)S = \left\{ {{{\alpha + i} \over {\alpha - i}}:\alpha \in R} \right\}(i = \sqrt { - 1} )S={α−iα+i:α∈R}(i=−1) lie on a :Astraight line whose slope is –1Bstraight line whose slope is 1.Ccircle whose radius is 1.Dcircle whose radius is 2\sqrt 22 .Check answerSkip