# Thread: 1 Summary Notation problem? (riemann sums)

1. ## 1 Summary Notation problem? (riemann sums)

The function y = f(x) is graphed below:

http://imagizer.imageshack.us/v2/800x600q90/841/a45g.jpg

Which of the following Riemann sums yields the exact area under the curve on the interval [0, 6]?

I. R=E(above=4)below=k=1 f(wk)deltaxk, where subdivisions are at {0, 2, 3, 4, 6} and right-hand endpoints are used.

II. R=E(above=4)below=k=1 f(wk)deltaxk, where subdivisions are at {0, 2, 3, 4, 6} and midpoints are used.

III.R=E(above=6)below=k=1 f(wk)deltaxk , where 6 equal subdivisions and right-hand endpoints are used.

I only
II only
III only
I, II, and III

2. ## Re: 1 Summary Notation problem? (riemann sums)

Originally Posted by justneedsomehelp987
The function y = f(x) is graphed below: -
http://imagizer.imageshack.us/v2/800...0/841/a45g.jpg