Question

What does it mean when it says 'equal subintervals' in this problem?

Estimate the area under the graph of y=(1/x) for x between 1 and 32 by dividing the interval [1,32] into 31 equal subintervals and using the left endpoint of each subinterval as sample point. Next, estimate the area using the right endpoint as sample point. Find the difference between the two estimates (left endpoint estimate minus right endpoint estimate).

Answer 1

means equal in length
fortunately for you, that means the length of each sub interval is 1

Answer 2

Thank you! :)