Obtuse approach. The Tofubeast is running due south at
10 mph. Monster is northeast of the Tofubeast and can run at 11 mph.
- if then undefined
Notice in the last variation, where , then according to
This would be a poor choice of : is instructed to head
away from in order to intercept, which makes no sense. But
, which is the special case of
non-interception even when equation (1) is
defined, and so is undefined.