If either finger height is more than half
the distance between the points on
the x-axis, the two Vs will intersect nontrivially, and
otherwise not; this is worth remembering for later.
By the way, when Vε(x) and
Vε'(y) do meet,
it’s at the point ((x+y)/2, |x-y|/2) .
[ >> ]
If either finger height is more than half
the distance between the points on
the x-axis, the two Vs will intersect nontrivially, and
otherwise not; this is worth remembering for later.