Find the locus of point z in the Argand plane if ` (z-1)/(z+1)` is purely imaginary.

If (z-1)/(z+1) is purely imaginary then

If (z-1)/(z+1) is purely imaginary, then |z|=

If (z - 1)/(z + 1) is purely imaginary, then |z| is

If z = x +iy and if the point P in the argand plane represents z then find the locus of P satisfying the equation (z - i)/(z -1) is purely imaginary

If the number (z-1)/(z+1) is purely imaginary, then

If the ratio (1-z)/(1+z) is purely imaginary, then

If z = x + i y and P represents z in the Argands plane. Find the locus of P when: (z - i) / (z - 1) is purely imaginary.