Question: 1. || f || supxX | f (x) | is a norm on B (X). 2. B(X) is a normed linear space. 3. B(X) is

1. || f || supx∊X | f (x) | is a norm on B (X).
2. B(X) is a normed linear space.
3. B(X) is a Banach space.

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