AngouriMath
TrySquareRoot
Method (no overloads)
Summary
The polynomial whose square this is, or null where it is not the
square of one overQ . Of the two roots, the one whose leading coefficient in
each variable, read in turn, is positive.
square of one over
each variable, read in turn, is positive.
Remarks
In the first variable that occurs, as for one variable: the root's leading coefficient
is the root of this one's, found the same way in the variables left, and each lower
coefficient is what the square of the root so far leaves at the next power down,
divided exactly by twice that leading coefficient. Whatever is not a square fails
one of those divisions or the check at the end.
is the root of this one's, found the same way in the variables left, and each lower
coefficient is what the square of the root so far leaves at the next power down,
divided exactly by twice that leading coefficient. Whatever is not a square fails
one of those divisions or the check at the end.
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