For the function f(z) = 24/(64 + 26): i. Find the singular points of f(z) and sketch them on the complex plane ii. Calculate the residues of the function f(z) at its singular points. iii. Hence, use the method of contour integration, the Cauchy residue Theorem and the Estimation Lemma to show that I x4 = Ĵ П dx = 64 + x6 3