i

Purpose

Imaginary unit.

Synopsis

i
a+bi
x+i*y

Description

As the basic complex unit sqrt(-1), i is used to enter complex numbers. Since i is a function, it can be overridden and used as a variable, if desired. Thus, you can still use i as an index in for loops, etc.

The character i can also be used without a multiplication sign as a suffix in forming a complex numerical constant.

You can also use the character j as the complex unit.

Examples

Z = 2+3i
Z = x+i*y
Z = r*exp(i*theta)

See Also

conj, imag, j, real

(c) Copyright 1994 by The MathWorks, Inc.