Hi all,

I am a bit confused as to how to find the regionRbounded by two graphs.

The specific problem is:

The regionRshown is bounded by the graphs of y=2^-x and y=2cos(x).

a) Find the area ofR

b) Determine the volume of the solid generated by revolvingRabout the line y=3

c) Determine the volume of the solid generated by revolvingRabout the line y=-1

d) Determine the volume of the solid whose base is regionRand cross sections parallel to the y-axis are squares.