The parallelepiped is deformed into the shape as shown below. The displacement is given by the following:

$u=C_1{x}^2{y}^2,$

$v=C_{2}x{y}^2{z}^2$

$w=C_{3}xy{z}^2$

a$)$ Determine the state of stress of stress at point $E(1\mathrm{.}5,1\mathrm{.}05,1)$ when coordinate of the same point affer deformation is $E^{**}(1\mathrm{.}504,1\mathrm{.}002,996).$

b$)$ Determine the normal strain at point $E$ in the direction of $EA$