48 Alphabetical Listing
cZeros()
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Complex zeros can include both real and
non-real zeros, as in the example to the
right.
Each row of the resulting matrix represents
an alternate zero, with the components
ordered the same as the VarOrGuess list.
To extract a row, index the matrix by [row].
Extract row 2:
Simultaneous polynomials can have extra
variables that have no values, but represent
given numeric values that could be
substituted later.
You can also include unknown variables that
do not appear in the expressions. These
zeros show how families of zeros might
contain arbitrary constants of the form ck,
where k is an integer suffix from 1 through
255.
For polynomial systems, computation time
or memory exhaustion may depend strongly
on the order in which you list unknowns. If
your initial choice exhausts memory or your
patience, try rearranging the variables in
the expressions and/or VarOrGuess list.
If you do not include any guesses and if any
expression is non-polynomial in any variable
but all expressions are linear in all
unknowns, cZeros() uses Gaussian
elimination to attempt to determine all
zeros.
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