W={(x,y): y=ax, a is an integer}, V=R^(2) It is not a subspace of V, but I can't find an example, where this is not valid. Please, help. Thank you.
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Originally Posted by Jav W={(x,y): y=ax, a is an integer}, V=R^(2) It is not a subspace of V, but I can't find an example, where this is not valid. Please, help. Thank you. . But does ?
Thank you very much for your prompt response. I forgot that cu + cv has to be in W as well. Thank you again.
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