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Show that S = {XE IR3 : 821 +312 -423 =0} is a subspace of IR3. To check that you are on the right track,

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Show that S = {XE IR3 : 821 +312 -423 =0} is a subspace of IR3. To check that you are on the right track, answer the following questions. . Is S a subset of a known vector space? Click for List . Does S contain the zero element? Click for List . Is S closed under vector addition? Click for List . Is S closed under scalar multiplication? Click for List

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