1.1.5 Complex Numbers
You can enter complex numbers in Mathematica just by including the constant I, equal to . Make sure that you type a capital I.
If you are using notebooks, you can also enter I as by typing ii (see Section 1.1.7). The form is normally what is used in output. Note that an ordinary i means a variable named , not .
|This gives the imaginary number result . || |
|This gives the ratio of two complex numbers. || |
(4 + 3 I) / (2 - I)
|Here is the numerical value of a complex exponential. || |
Complex number operations.
|x + I y ||the complex number |
|Re[z] ||real part |
|Im[z] ||imaginary part |
|Conjugate[z] ||complex conjugate or |
|Abs[z] ||absolute value |
|Arg[z] ||the argument in |