In: Math
Use the method of cylindrical shells to find the volume V generated by rotating the region bounded by the given curves about the specified axis.
y = ex, x = 0, y = 7π; about the x-axis
Given curve is:
, 
 and 
.
the given curve is rotated about x-axis.
finding intersection points:
put x-0,   

hence, intersection point is (0,1)


considered a small cylindrical shell of radius 
 and height 
 integrate it over the y-axis.
The corresponding volume of the curve is defined as:





  