If `z=1+it h e nz^(10)` reduces to: A purely imaginary number An imaginary number A purely real number A complex number

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

If z is a purely imaginary number then arg (z) may be

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

The complex number z is purely imaginary,if

The complex number z is purely imaginary , if

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

If z=|[-5, 3+4i,5-7i],[3-4i,6 ,8+7i],[5+7i,8-7i,9]|,t h e nz is (a) purely real (b)purely imaginary (c)an imaginary number that is not purely imaginary,a+i b , w h e r ea!=0,b!=0 (d)both purely real and purely imaginary

If z=|[-5, 3+4i,5-7i],[3-4i,6 ,8+7i],[5+7i,8-7i,9]|,t h e nz is (a) purely real (b)purely imaginary (c)an imaginary number that is not purely imaginary,a+i b , w h e r ea!=0,b!=0 (d)both purely real and purely imaginary

If bar(z)= -z ne 0 , show that z is necessarily a purely imaginary number