Problem 5. Let a E R" be fixed. Suppose that vectors x, y E R" are related by the equation a = x+ (x· y)y. (a) Show that ||a||2 – ||x||? 2 + ||y||? (x ·y)² (b) Deduce that ||a|| > ||x||.

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A: graph the function

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A: Here I am attaching image so that you understand each and every step.

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