Land's End is a peninsula located at the extreme western tip of Cornwall, Great Britain near Penzance[?]. Visible from Land's End is the Longships Lighthouse. The Longships, a few miles out, is a serpentine and quartz island. Offshore, midway between Land's End and the Scilly Isles, lies the mythical lost land of Lyonesse, referred to in Arthurian literature.
... discriminant of the quadratic equation, because it discriminates between three qualitatively different cases:
If the discriminant is zero, then there is a repeated ...