Question 169528
if you looking for the shortest root back you have the distance of 2 legs of a right triangle the shortest distance back is the hypothenuse

so {{{.50^2+1.5^2=c^2}}}
{{{c^2=.25+2.25}}}
{{{c=sqrt(2.5)}}}
{{{highlight(c=1.58)}}} which is the shortest distance to your starting point