|
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 page 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  .
In[1]:= Sqrt[-4]
Out[1]= 
This gives the ratio of two complex numbers.
In[2]:= (4 + 3 I) / (2 - I)
Out[2]= 
Here is the numerical value of a complex exponential.
In[3]:= Exp[2 + 9 I] //N
Out[3]= 
Complex number operations.
THIS IS DOCUMENTATION FOR AN OBSOLETE PRODUCT. SEE THE DOCUMENTATION CENTER FOR THE LATEST INFORMATION. | 
