Question: Suppose V= span{v1, v2,..., vn}. If u = a1v1 + a2v2 + ... + anvn where the ai, are in R and a1 0,

Suppose V= span{v1, v2,..., vn}.
If u = a1v1 + a2v2 + ... + anvn where the ai, are in R and a1 ≠ 0, show that V = span{u, v2,..., vn).

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