What is the shortest distance between the spherical surfaces (x − 3)² + (y + 4)² + (z − 5)² = 6 and (x+4)² + (y - 3)² + (z − 2)² = 25?

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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What is the shortest distance between the spherical surfaces (x − 3)² + (y + 4)² + (z − 5)² = 6 and
(x+4)² + (y - 3)² + (z − 2)² = 25?
Remember that two spherical surfaces can have one of several possible geometric arrangements:
Each surface could be completely outside the other (e.g. two marbles not touching)
One surface could be completely inside the other (e.g. a bubble floating freely inside another bubble)
●
●
The two spheres could intersect at a single point (e.g. two marbles touching each other or a marble inside and
resting against the inner surface of a ping pong ball)
The two spheres could partially overlap (e.g. sound waves in air from two people clapping after each has heard
the other)
The two spheres could coincide, which happens if and only if the two equations represent the same sphere
In the first two cases there is a smallest positive distance between the surfaces. In the others there is not. Correct
classification of the geometry is key!
Transcribed Image Text:What is the shortest distance between the spherical surfaces (x − 3)² + (y + 4)² + (z − 5)² = 6 and (x+4)² + (y - 3)² + (z − 2)² = 25? Remember that two spherical surfaces can have one of several possible geometric arrangements: Each surface could be completely outside the other (e.g. two marbles not touching) One surface could be completely inside the other (e.g. a bubble floating freely inside another bubble) ● ● The two spheres could intersect at a single point (e.g. two marbles touching each other or a marble inside and resting against the inner surface of a ping pong ball) The two spheres could partially overlap (e.g. sound waves in air from two people clapping after each has heard the other) The two spheres could coincide, which happens if and only if the two equations represent the same sphere In the first two cases there is a smallest positive distance between the surfaces. In the others there is not. Correct classification of the geometry is key!
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