Let V = R, the real line. Let W be a subset of V, where W = {x € R|x ≥ 0}. Is W a subspace of V? Justify your answer.

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Let V = R, the real line. Let W be a subset of V, where W = {x € R|x ≥ 0}.
Is W a subspace of V? Justify your answer.
Transcribed Image Text:1. Let V = R, the real line. Let W be a subset of V, where W = {x € R|x ≥ 0}. Is W a subspace of V? Justify your answer.
Expert Solution
Step 1

Given that the vector space V=R , the real line  .

The subset W of V is said to be a subspace of V if it is closed under vector addition and scalar multiplication that is 

(i) closed under vector addition :

  for all u,v ∈ W  implies u+v ∈ W.

(ii) Closed under scalar multiplication:

 for u ∈ W and k be any scalar, then ku ∈ W .

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