show all work for full credit. 1. Complex Exponentials: Simon.r the following expression and give your answer both in polar and roots ngular form.

or o = Gem + ale—Tm2 2. Differenoe Equations: Solve the following difference eo uation using recursion by hand {for n20 to n=4]

or 1Jr[n] + [Joann—1] = 2x[n—1]; xln] = ﬁ[n], y[—1] = l] 3. Differential Equations: Solve the following problem for ﬁt).

or owot + 21m} = Exit]; xft] = Lift}, yfﬂj = —1 Math