CPM Homework Help : CALC Problem 8-52

Let y = 3^x+ 1, y = 0, x = 0, and x = 2. Find the volume of the region revolved about each of the lines below. Homework Help ✎
1. x-axis
2. y-axis
3. y = −1
4. Explain why is the incorrect set-up for a washer given.

Hint:

Be sure to sketch the region before beginning.

Hint (b):

If y = 3^x + 1, then x = log₃(y − 1).

Hint (c):

Notice, both the outer and the inner radii are 1 unit longer than in part (a).

Hint (d):

True or False? R² − r² = (R − r)²