** Imaginary unit. **

** The variables i and j both initially have the value sqrt(-1) **

** for use in forming complex quantities. For example, the **

** expressions 3+2i, 3+2*i, 3+2i, 3+2*j and 3+2*sqrt(-1). **

** all have the same value. However, both i and j may be **

** assigned other values, often in FOR loops and as subscripts. **

** **

** **

** See also I . **

** Built-in function. **

** Copyright (c) 1984-93 by The MathWorks, Inc. **

** **