SigmaArea.mws Sigma Notation problem: Show that Sum(i^2-3*i,i = 2 .. 5); = Sum(i^2,i = 2 .. 5); - 3*Sum(i,i = 2 .. 5); Properties and Special Sums: Area under f and more e.g. Find the area under y = 2x + 1 and above [0,4]. 1. The Easy Way. 2. The Hard way. e.g. Find Int(x^2+2,x = 1 .. 2); More general: Properties of the Definite Integral Comparison of 3 different Area Approximations