Q1.

(10 points) The element shown has 3 linear sides and one quadratic side. Determine the

five shape functions N₁ (x, y). Dimensions are 2a by 2b. Hint: Use either method 1 or

method 3 (demonstrated for the quadratic triangular element) described in the class notes,

which are discussed in the attached pages similar to Ch 6 of the Cook textbook and in

Handout_Ch04supp.pdf (Section 6.11).