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Question: a let viv2 v3 v4 be vectors in rquot and...

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A) Let Vi,V2, V3, V4 be vectors in R and suppose you know that Is 1 a linear combination of v2, V3, V4? Justify your answer. B) Let ul , 112 be vectors in Rn. Suppose v, w are linear combinations of 111 and 112 Verfiy that alsovW and more generally all vectors of the form av + bw are linear combinations of ui ü2 (Hint: write v-cuI +cüi2 , and w- ds ui +d2üz, then v +W-..)

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