[ANSWERED] For the linear strain tetrahedral element shown in Figure P11–8, (a) express the displacement fields

For the linear strain tetrahedral element shown in Figure
P11–8, (a) express the displacement fields u, v, and w in the x, y and z
directions, respectively. Hint: There are 10 nodes each with three
translational degrees of freedom, u
i
, v
i
, and w
i
.
Also look at the linear strain triangle given by Eq. (8.1.2) or the expansion
of Eqs. (11.2.2).