Graph of a conic : conique

### 2.49.5 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 argument or as a vector as second argument.
`conique` draws this conic.
Input :

`conique(2*x```^```2+2*x*y+2*y```^```2+6*x)`

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.