Question: Let a ( R be fixed. Suppose that vectors X, y ( R are related by the equation a = x+(x . y)y. a) Show

Let a ( R" be fixed. Suppose that vectors X, y ( R" are related by the equation a = x+(x . y)y. a) Show that Ja|12 - 1/x112 = (x . y)2 2+ y 2 b) Deduce that | |al| > |/x||

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