[ANSWERED] 1. Evaluate the shape functions given by Eq. (8.2.6). Sketch the variation of each function over the

1. Evaluate the shape functions given by Eq. (8.2.6). Sketch
the variation of each function over the surface of the triangular element shown
in Figure 8–3.
2. Express the strains e
x
;e
y
, and g
xy
for the element of Figure 8–3 by using the results given in Section 8.2.
Evaluate these strains at the centroid of the element; then evaluate the
stresses at the centroid in terms of E and n. Assume plane stress conditions
apply