Tutorial Exercise Use the properties of summation and the Summation Formulas Theorem to evaluate the sum. Use the summation capabilities of a graphing utility to verify your result. 24 gi i = 1 Step 1 24 To evaluate the sum 9;, the following property of summation can be used to find the sum. ka = k i = 1 7 = 1 i=1 a 24 Using the above property, 9; = 9. 9i Step 2 7 = 1 24 9 24 7=1 Use the Summation Formulas Theorem to find 9 ;. Recall that Theorem 5.2 states the following. n(n + 1) i=1