<p>Anyone know how to do these? We're reviewing them from first semester this year, and I've totally forgotten the formulas and all.</p>
<p>Just spin 'n slice. :)</p>
<p>Actually, I can't explain them in text like this. Maybe someone else can help.</p>
<p>Hope this helps, I wasn't too sure how to translate integral notation onto the message board. PM me if you have any questions, Good Luck!</p>
<p>Disk:
V=pi*Int (a,b) r^2 dx</p>
<p>Washer:
V= pi*Int (a,b) [R^2-r^2] dx </p>
<p>Shell:
V=2pi<em>Int (a,b) [r</em>h] dx</p>
<p>What are the radius and height? I mean how do I determine them?</p>
<p>wow im taking a test on this tommorow</p>
<p>I have this review packet with like 3 pages of them, and more pages of other stuff.</p>
<p>My calc teacher is crazy, and says that if we don't finish the entire thing it's a zero.</p>
<p>So do you know how to do it?</p>
<p>I'm taking a test on the same stuff tomorrow.</p>
<p>My class is into the review stage right now.</p>
<p>I really don't think I'll be able to adequetly explain these concepts on a message board without any diagrams but For Washer/Disk problems Radius is simply the distance from the curve to the axis of rotation while in the shell method it is the radius of each shell and the height is the height of each shell (Usually the distance from the top curve to the bottom curve). Sorry, I know that seems vague but I really don't know how to convey these ideas without drawing some diagrams and examples. Good Luck!</p>
<p>Wow I have a test on that stuff tomorrow. So much fun!</p>
<p>What the hell is this? "Shells, dics, and washers"? LOL, AP Physics C or B?</p>
<p>AP Calc...</p>
<p>I also have a test on it tomorrow.</p>
<p>ya i guess a lot of us have it at the same time since AP tests are nearing ahd this is one of the last subjects for the AB test at least</p>