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