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It holds for any two points with distinct x coordinates. Note that the third point might be outside the range of coordinates shown in the article's graphs. Part
by dlubarov 5y ago
It holds for any two points with distinct x coordinates. Note that the third point might be outside the range of coordinates shown in the article's graphs. Particularly if the line is nearly vertical, you may need to zoom out to see the third point.
- hh3k0 5y agoSure seems to me that he is either unaware of or struggles with the point at infinity, so I'll add a link for him in my reply to your comment: https://en.wikipedia.org/wiki/Elliptic_curve_point_multiplication#Point_at_infinity https://en.wikipedia.org/wiki/Elliptic_curve_point_multiplic....