Number of real or purely imaginary solution of the equation, `z^3 + iz-1=0` is

The equation Z^(3)+iZ-1=0 has

The equation Z^(3)+iZ-1=0 has

The number of real roots of the equation z^(3)+iz-1=0 is

The number of real roots of the equation z^(3)+iz-1=0 is

The complex number z is purely imaginary,if

The complex number z is purely imaginary , if

The quadratic equation p(x)=0 with real coefficients has purely imaginary roots. Then the equation p(p(x))=0

The quadratic equation p(x)=0 with real coefficients has purely imaginary roots. Then the equation p(p(x))=0 has A. only purely imaginary roots B. all real roots C. two real and purely imaginary roots D. neither real nor purely imaginary roots

The quadratic equation p(x)=0 with real coefficients has purely imaginary roots. Then the equation p(p(x))=0 has A. only purely imaginary roots B. all real roots C. two real and purely imaginary roots D. neither real nor purely imaginary roots