Riemann sum  Integrals
Riemann sum
Lessons
Notes:

1.
Riemann Sum overview:

3.
Finding the area under the graph of a function using the Riemann Sum.
Consider the function $f\left( x \right) = {x^2}$, $1 \le x \le 3$.
Estimate the area under the graph of $f$ using four approximating rectangles and taking the sample points to be: 
4.
Evaluating integrals with a Riemann Sum
Consider the function $f\left( x \right) = {x^2}  5x + 3$, $2 \le x \le 5$.
a)
Evaluate the Right Riemann sum for $f$ with 6 subintervals.
