3) (45 pts) In this problem, you'll explore the same question from several different approaches to confirm that they all are consistent with each other. Consider the infinite series: 1 1 1 1 1.2 3.23 5.25 7.27 a) (3 points) Write the given numerical series using summation/sigma notation, starting with k=0. +... b) (5 points) Identify the power series and the value x=a at which it was evaluated to obtain the given (numerical) series. Write the power series in summation/sigma notation, in terms of x. Recall: a power series has x in the numerator! c) (5 points) Find the radius and interval of convergence for the power series in part b).