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5.53.5  Graph of a conic : conique

conique takes as argument the equation of a conic with respect to x,y. You may also specify the names of the variables as second and third arguments or as a vector as second argument.
conique draws this conic.
Input :


Output :

the graph of the ellipsis of center -2+i and equation 2*x^2+2*x*y+2*y^2+6*x=0

Remark :
See also conique_reduite for the parametric equation of the conic.

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