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| (Compiled with Asymptote version 2.14svn-r5318) |
import geometry;
size(10cm);
point C=(4,2);
dot("$C$",C,E+NE,red);
hyperbola h=hyperbola(C,1.5,1,-20);
draw(h, linewidth(bp));
/* View the definition of line tangent(hyperbola,abscissa) */
line l=tangent(h,angabscissa(85));
draw(l, grey);
dot(intersectionpoints(h,l));
l=tangent(h,angabscissa(0,fromCenter));
draw(l, grey);
dot(intersectionpoints(h,l));
// Enlarge the bounding box of the current picture.
draw(box((-1,-0.5), (9,4)), invisible);
