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NAGtypes :: realPoints

realPoints -- determine whether a point is real

Synopsis

Description

i1 : needsPackage "NumericalAlgebraicGeometry"

o1 = NumericalAlgebraicGeometry

o1 : Package
i2 : R = CC[x,y];
i3 : sols = solveSystem{x^6-y^4, x-y-2}

o3 = {{-2*ii, -2-2*ii}, {2*ii, -2+2*ii}, {.937565+.715691*ii,
     ------------------------------------------------------------------------
     -1.06244+.715691*ii}, {.937565-.715691*ii, -1.06244-.715691*ii},
     ------------------------------------------------------------------------
     {-2.87513, -4.87513}, {1, -1}}

o3 : List
i4 : realPoints sols

o4 = {{-2.87513, -4.87513}, {1, -1}}

o4 : List

Ways to use realPoints :