The displacement field of a given object

$u=(10+0\mathrm{.}1xy+0\mathrm{.}05z){10}^{-3}$

$v=(5-0\mathrm{.}05x+0\mathrm{.}1yz){10}^{-3}$

$w=(10-0\mathrm{.}1xyz){10}^{-3}$

Try to find the absolute value of the maximum elongation at point $A(0\mathrm{.}5,-1,0).$