This is an exercise problem in our calculus class and we were tasked to find the volume using the Washer method. I already sketched it and know what the figure will look like if revolved: like a coin on its side with a funnel-shaped hole through it. But the problem is I don't know what R (outer radius) and r (inner raidus) are. Is it R=x^2-2x+y=3, r=4-x?
- 3 AnswersImmigration2 months ago
Calc help! The area bounded by y=lnx,x=e, and x-axis is revolved about the x-axis. Find the volume generated by using circular disk method?
My answer is at 143.71 rounded of to 2 decimal places. But I'm not really sure. A solution with an explanation is much appreciated. Thank you! :)
My answer is 1/54 (arctan (x/3) + 3x/9x^2)+C. But I'm not quite sure and I'm stuck with this practice problem. A solution with explanation is much appreciated. Thanks in advance.