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liizzyliizz
 5 years ago
Can someone help me with Cross sections please?
Region bounded by y=e^x +1 , y=8 and the yaxis
cross sections are semi circles.
liizzyliizz
 5 years ago
Can someone help me with Cross sections please? Region bounded by y=e^x +1 , y=8 and the yaxis cross sections are semi circles.

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amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0dw:1327356271299:dw

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Amistre64, can you hep me once you're done here please?

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0im assuming by cross section you are trying to find the area when the cross sections are semicircles?

liizzyliizz
 5 years ago
Best ResponseYou've already chosen the best response.0for the y=8 would hat be considered another line o.o its just that my teacher gave us a piece of paper and the information listed above is all that is written. So i've been afraid to do anything crazy because it is a project lol

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0y=8 is a horizontal line thru y=8 yes

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0do you kow how the semicircles are crosssectioned in there? say flat part up hopefully?

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0dw:1327359342185:dw

liizzyliizz
 5 years ago
Best ResponseYou've already chosen the best response.0That last part has me a bit thrown off, can you explain?

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0im trying to determine how the semicircles are orientated in the shaded area

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0with any luck the flat end is up and the rounded end down to make life simpler

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0we can also move the graph and not change the area; lower it down so it begine at 0,0  in effect we subtract 2 from our heights

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0y = e^x  2 y = 6 would be the new way it would look but it would retain the same content

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0it might be good to know where these lines cross at so that we can set up boundaries to integrate by

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0e^x  2 = 6 e^x = 8 x = ln(8) looks about right to me

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0dw:1327360185033:dw

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0the radius of each semicircle is then the distance from y=6 to y=e^x2 or simply: R = 6(e^x 2) = 6 e^x +2 = 8  e^x

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0got some numbers off in me head; e^x is normal ar y=1 +1 means we are at y=2 drop 2 means we are at e^x 1, not e^x 2 it bites getting old

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0R = 7  e^x is our radiuses then

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0:) its easier than it looks, i hope

liizzyliizz
 5 years ago
Best ResponseYou've already chosen the best response.0This is like going over my head, lol I'll try it out, it doesn't look so hard, I guess I just get intimidated by graphs /

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0the graph is more of a picture to help focus your thought on; gives you something more concrete to play with than an abstract notion of integrations and such

liizzyliizz
 5 years ago
Best ResponseYou've already chosen the best response.0It's just that I have to find someway to make 10 semicircles on my graph. so that has me nervous. lol I think the actually solving the integral is much easier.

liizzyliizz
 5 years ago
Best ResponseYou've already chosen the best response.0But thank you anyway :D your help is always greatly appreciated !

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.010? ugh yeah, wish i could be more helpful :) good luck with it tho

liizzyliizz
 5 years ago
Best ResponseYou've already chosen the best response.0Thank you very much. and lol yesss __ cutting 10 little semi circles is not fun :c
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