Multiple Choice: The function f(x) = x2 is bounded by the y-axis and the line y = 4. The volume generated by revolving the region about the y-axis can be found by which of the following integrals? Homework Help ✎
a. I only
b. II only
c. III only
d. I and II
e. I and III
If you want to use disks/washers, then rotate horizontal rectangles...
that means that both the bounds and the integrand must be written in terms of y.
If you want to use shells, then use x-values.