Question

the complex no z is purely imaginary if​

Answer 1

Answer:

Step-by-step explanation:

We know,

Z= x+iy

hence ,if x=0

Then

Z=iy whence i is iota

Answer 2

Answer:

if z is purely imaginary then it's real part must be 0.

or,

if , Z = x + iy

thus, if it is purely imaginary then x = 0.

note, here x and y are real numbers and i( iota) is imaginary number ,

where I = √-1.