- Jun 23, 2001
- 13,674
- 1
- 76
Find the volumes of the solids obtained by rotatiing the region bounded by the curves y = x and y = x^2 about the following lines
a) the x-axis
b) the y-axis
c) y = 2
I really don't get this stuff, so I need help all the way back to square one.
I attempted the first two, got them both wrong, so I figured I'll ask ATOT before I even try the third.
(a) Over the X-Axis (using the disc method)
pi * integral [x^2 - x]^2 from 0 to 1
What's wrong with this setup?
(b)Over the Y-Axis (using the shell method)
2pi * integral [ (x^2 - x)*(x) ] from 0 to 1
What's wrong with this setup?
Thanks a lot in advance. I don't know how I'd be passing half my classes if I didn't have AT
a) the x-axis
b) the y-axis
c) y = 2
I really don't get this stuff, so I need help all the way back to square one.
I attempted the first two, got them both wrong, so I figured I'll ask ATOT before I even try the third.
(a) Over the X-Axis (using the disc method)
pi * integral [x^2 - x]^2 from 0 to 1
What's wrong with this setup?
(b)Over the Y-Axis (using the shell method)
2pi * integral [ (x^2 - x)*(x) ] from 0 to 1
What's wrong with this setup?
Thanks a lot in advance. I don't know how I'd be passing half my classes if I didn't have AT