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D.13.6.30 dualConic

Procedure from library tropical.lib (see tropical_lib).

Usage:
dualConic(f); f poly

Assume:
f is an affine conic in two variables x and y

Return:
poly, the equation of the dual conic

Example:
 
LIB "tropical.lib";
ring r=0,(x,y),dp;
poly conic=2x2+1/2y2-1;
dualConic(conic);


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