The nodal values of the element shown are u, = 0.1870, U2 = 0.2173, u3 = u, =0.2232. Use isoparametric formulation to 3 answer the questions: 0.5 1) Compute u, and at the point Ox dy (x, y) =(0.375, 0.375). X 0.5 2) Evaluate ON, ON dxdy using Gauss quadrature, 2 ax dy sampling points in each direction