[" Let "x,y in R," then "x+y" l is a purely "],[" imaginary number if "]

Let x,y ∈ R, then x+iy is a purely imaginary number if

Select and write the correct answer from the given alternatives in each of the following: Let x, y in R then x + yi is purely imaginary number if

Consider a complex number w=(z-1)/(2z+1) where z=x+iy, where x,y in R . If the complex number w is purely imaginary then locus of z is

Let x, y in R then x+i y is a non real complex number is

Let x, y in R . Then x + i y is a non real complex number if

Let x,y in R. Then x+iota y is a non real complex number is

Let z=x+iy, where x and y are real. Thepoints (x,y) in the X-Y plane for which (z+i)/(z-i) is purely imaginary lie on

Let z=x+iy , where x and y are real. The points (x,y) in the xy-plane of which (z+1)/(z-1) is purely imaginary, lie on

If z=1+i then z^(10) reduces to: A purely imaginary number An imaginary number A purely real number A complex number