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6.33.1  Roots and poles of a rational function: froot

The froot command finds roots and poles of a rational function.


Examples.


Remark.
To find the complex roots and poles, put Xcas in complex mode (check Complex in the cas configuration, red button giving the state line; see Section 3.5.5).


Example.
Input (in complex mode):

froot((x^2+1)/(x-2))

Output:


i,1,i,1,2,−1

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