next | previous | forward | backward | up | top | index | toc | Macaulay2 website
CoincidentRootLoci :: member(RingElement,CoincidentRootLocus)

member(RingElement,CoincidentRootLocus) -- test membership in a coincident root locus

Synopsis

Description

i1 : R := QQ[x,y];
i2 : F = x^7-3*x^6*y+5*x^5*y^2-7*x^4*y^3+7*x^3*y^4-5*x^2*y^5+3*x*y^6-y^7

      7     6      5 2     4 3     3 4     2 5       6    7
o2 = x  - 3x y + 5x y  - 7x y  + 7x y  - 5x y  + 3x*y  - y

o2 : QQ[x..y]
i3 : member(F,coincidentRootLocus {3,2,2})

o3 = true
i4 : member(F,coincidentRootLocus {5,2})

o4 = false

See also

Ways to use this method: