Consider the geometric series given by: 61+91+272+814+2438 All except the first fraction have been simplified. Write the summation formula for this series. Use the form: ∑i=sta(r)s. Note: You will need to find r, the constant ratio, a the initial term, s and t, the limits of the summation. The format shown on the left side of Property 9 , and examples 1 & 2 of Sect 11.1.4 might be helpful. [3 marks