Question 1
What is a Riemann sum used to approximate?
Question 2
In a Riemann sum, what is the width of each subinterval when the interval $[a,b]$ is divided into $n$ equal parts?
Question 3
What does a right-endpoint Riemann sum use for the height of each rectangle?
Question 4
Which expression represents a left-endpoint Riemann sum for $f$ on $[a,b]$ with $n$ equal subintervals?
Question 5
If $f(x)$ is positive on an interval, what does $\int_a^b f(x)\,dx$ represent?
