E. Show that both R and R² may be covered by countably many open balls.

Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter7: Distance And Approximation
Section7.2: Norms And Distance Functions
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Show that both ℝ and ℝ2 may be covered by countably many open balls.

E. Show that both R and R² may be covered by countably many open balls.
Transcribed Image Text:E. Show that both R and R² may be covered by countably many open balls.
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