This is just another guess, but it might refer to something of this nature: http://www.analyzemath.com/calculus/Problems/minimum_distance.html http://www.analyz

This is just another guess, but it might refer to something of this nature: http://www.analyzemath.com/calculus/Problems/minimum_distance.html http://www.analyzemath.com/calculus/Problems/minimum_distanc...