2.3 Consider the trigonometric polynomial A(@) defined by A(@)= 3a cosko k- and sets of frequency grids 2, = {0,0,0,1., @} [0,0,1 2. = {@,,,,,Wx} [0] Suppose we want to find the parameters of Aw), {ax, k=0, 1, n}, that solve the problem minimize max A(@)- 4,(6) (x, k-0,1.... Un, 38 a where 4(@) is a desired function that has been given. Formulate the above problem as a constrained minimization problem in the form minimize f(x) subject to: c(x) SO for i=1,2,..., To earn credits, it is required that functions f(x) and all c/(x) are defined explicitly