JEE Main 20199 Apr, Morning shiftMathematicsEasyComplex Numbers and Quadratic Equations264× since 2002All 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 :AOption A. straight line whose slope is –1BOption B. straight line whose slope is 1.COption C. circle whose radius is 1.DOption D. circle whose radius is 2\sqrt 22 .CheckSkip · show solution
