t ( 4 , 6 ) = ( 4 − 1 ) 2 + ( 6 − 11 ) 2 = 5.83. {\displaystyle {\begin{aligned}t\left({\rm {4,6}}\right)&{\rm {=}}{\sqrt {{\left({\rm {4}}-{\rm {1}}\right)}^{\rm {2}}{\rm {+}}{\left({\rm {6}}-{\rm {11}}\right)}^{\rm {2}}}}{\rm {=5.83.}}\end{aligned}}}
