Question

CALC ANsWER CHECK!!
Set up, but do not evaluate, the integral which gives the volume when the region bounded by the curves y = Ln(x), y = 1, and x = 1 is revolved around the line y = −1.

v = πr^2 dx
v = π(R^2-r^2) dx

v = ∫[1,e] π(R^2-r^2) dx
v = ∫[1,e] π(4-(lnx)^2) dx

Answer 1

@satellite73

Answer 2

@triciaal

Answer 3

@jim_thompson5910