complex number in MatLab -- MatLab

properties

i

imagery unit
it is equivalent to sqrt(-1).

j

same as i

imagery unit
it is equivalent to sqrt(-1).

method

complex

create a complex number.

syntax

(1)z=complex(a,b);

is equivalent to

z=a+b*i;

(2)z=complex(x);

will return x+0*i;

where x is a real number.

[NOTE]

In this case, isreal(z) will return false  because z is a complex number not a real number;

(3)z=complex(x)

will return identical of x

where x is a complex number.