MATLAB®

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

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