Originally Posted by
mr fantastic 1) integral of 1/x^2 from x = 0 to x = 1. Draw a graph and draw the rectangles (n rectangles each of width 1/n) to see this.
Mr F says: My mistake. It should be integral of x^2.
2) integral of sin(x) from x = 0 to x = pi. Draw a graph and draw the rectangles (n rectangles each of width pi/n) to see this.