Exercise 10.) Suppose (E, ||·||) a normed vector space with its usual the metric d(x, y) = ||yx||. What is the exterior of the closed ball Ba(x,r)? b) What is the exterior of the open ball B₁(x,r)? c) What is the exterior of the sphere Sa(x, r) = {y € E | d(x, y) = r}?

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Chapter2: Second-order Linear Odes
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Exercise 10.) Suppose (E, ||·||) a normed vector space with its usual the
metric d(x, y) = ||yx||.
a) What is the exterior of the closed ball Ba(x,r)?
b) What is the exterior of the open ball B₁(x,r)?
c) What is the exterior of the sphere Sa(x, r) = {y € E | d(x, y) = r}?
Transcribed Image Text:Exercise 10.) Suppose (E, ||·||) a normed vector space with its usual the metric d(x, y) = ||yx||. a) What is the exterior of the closed ball Ba(x,r)? b) What is the exterior of the open ball B₁(x,r)? c) What is the exterior of the sphere Sa(x, r) = {y € E | d(x, y) = r}?
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