MATLAB Function Reference

j

Imaginary unit

Syntax

• j
  x+yj
  x+j*y
  

Description

Use the character j in place of the character i, if desired, as the imaginary unit.

As the basic imaginary unit sqrt(-1), j is used to enter complex numbers. Since j is a function, it can be overridden and used as a variable. This permits you to use j as an index in for loops, etc.

It is possible to use the character j without a multiplication sign as a suffix in forming a numerical constant.

Examples

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

See Also

conj, i, imag, real

isvector

keyboard

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