Page 278 - Elementary_Linear_Algebra_with_Applications_Anton__9_edition
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(a) If                                                         , then u and v are orthogonal.

(b) If u is orthogonal to v and w, then u is orthogonal to .

(c) If u is orthogonal to                                      , then u is orthogonal to v and w.

(d) If  , then .

(e) If  , then .

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