[" If "(z-alpha)/(z+alpha)(alpha in R)" is a purely imaginary number "],[" and "|z|=2," then a value of "alpha" is : "]

(z-alpha)/(z+alpha) is purely imaginary and |z|=82 then |alpha| is:

(z-alpha)/(z+alpha) is purely imaginary and |z|=82 then |alpha| is:

Let (z-alpha)/(z+alpha) is purely imaginary and |z|=2, alpha in RR then alpha is equal to (A) 2 (B) 1 (C) sqrt2 (D) sqrt3

Let (z-alpha)/(z+alpha) is purely imaginary and |z|=2, alpha in RR then alpha is equal to (A) 2 (B) 1 (C) sqrt2 (D) sqrt3

Let (z-alpha)/(z+alpha) is purely imaginary and |z|=2, alphaepsilonR then alpha is equal to (A) 2 (B) 1 (C) sqrt2 (D) sqrt3

Let (z-alpha)/(z+alpha) is purely imaginary and |z|=2, alphaepsilonR then alpha is equal to (A) 2 (B) 1 (C) sqrt2 (D) sqrt3

Let (z-alpha)/(z+alpha) is purely imaginary and |z|=2, alphaepsilonR then alpha is equal to (A) 2 (B) 1 (C) sqrt2 (D) sqrt3

Suppose a in R and z in C. "If" |z| = 2 and (z-alpha)/(z+alpha) is purely imaginary, then 1.25 |alpha| is equal to ____________.

Let z=(11-3i)/(1+i) . If alpha is a real number such z-ialpha is real, then the value of alpha is

If a cos alpha+i sin alpha and the equation az^(2)+z+1=0 has a pure imaginary root, then tan alpha=