- #1
Ronaldo95163
- 77
- 1
Hey guys.
So I've been trying to learn Double Integrals on my own and I'm at Volume between surfaces...so googling some worksheet problems I came across the one and I'm a bit confused.
1. Homework Statement
Let U be the solid above z = 0, below z = 4 − y^2, and between the surfaces x = siny − 1 and x = siny +1. Find the volume of U.
So what I was thinking was that the surfaces are x = siny − 1 and x = siny +1. Normally with the volume between surfaces you equate both of them and the resulting function is the region for which the volume is found between the region itself and the difference of the two functions...and the double integral is setup from this.
But here the surfaces are defined in terms of x so I was thinking that the surfaces are in the xy plane and below the 3D parabola in the Z plane z = 4-y^2. So is it the Volume between that and the region enclosed between the surfaces x = siny − 1 and x = siny +1?
My biggest issue in going forward is actually visualizing what's going on so I can setup the double integral
So I've been trying to learn Double Integrals on my own and I'm at Volume between surfaces...so googling some worksheet problems I came across the one and I'm a bit confused.
1. Homework Statement
Let U be the solid above z = 0, below z = 4 − y^2, and between the surfaces x = siny − 1 and x = siny +1. Find the volume of U.
Homework Equations
The Attempt at a Solution
So what I was thinking was that the surfaces are x = siny − 1 and x = siny +1. Normally with the volume between surfaces you equate both of them and the resulting function is the region for which the volume is found between the region itself and the difference of the two functions...and the double integral is setup from this.
But here the surfaces are defined in terms of x so I was thinking that the surfaces are in the xy plane and below the 3D parabola in the Z plane z = 4-y^2. So is it the Volume between that and the region enclosed between the surfaces x = siny − 1 and x = siny +1?
My biggest issue in going forward is actually visualizing what's going on so I can setup the double integral
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