PLS HELP WITH THE QUESTION.

Section 8.7: Problem 21 Previous Problem Problem List Next Problem (1 point) a) Consider the function arctan(x2). Write a partial sum for the power series which represents this function consisting of the first 4 nonzero terms. For example, if the series were ) _ 3"2", you would write 1 + 3x2 + 32x4 + 331-6 Also indicate the radius of convergence. Partial Sum: Radius of Convergence: |1 b) Use part a) to write the partial sum for the power series which represents / arctan(x?) dar. Write the first 4 nonzero terms. Also indicate the radius of convergence. Partial Sum: Radius of Convergence: c) Use part b) to approximate the integral J, * arctan(x?) dx. 0.021256