Say you need to compute Riemann Sums at selected points over a given interval. And you do have your trusty TiNspire CX on you. Then start Calculus Made Easy , go to option 1 J in the menu and enter
- the given function
- the given interval
- the selected x-values c1, c2, ..
as shown in image
Then each Riemann rectangle is computed step by step as shown below :
Lastly, view the final Riemann Sum and compare it to the exact definite integral. Pretty close 😉