Math Is Fun Forum
Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °
You are not logged in.
- Topics: Active | Unanswered
#26 2008-04-06 14:51:29
- LuisRodg
- Real Member
- Registered: 2007-10-23
- Posts: 322
Re: Tell me what I did wrong >.<
No problem. Been there myself.
Anyways, if you rotate around y=1 (are you sure this time??? lol 
) then what changes is the radius of the solid. So before the radius was "y" but now since we are rotating around y=1 then the new radius is "y-1" and not "1-y" like you said. So the resultant integral would be:
Offline
#27 2008-04-06 14:53:45
- SvenBee
- Member
- Registered: 2008-03-08
- Posts: 106
Re: Tell me what I did wrong >.<
Woot!!! Thanks, now 5 hours of sleep and then school. Gotta love life!
e...the red-headed stepchild of math.
Offline