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  3. let x, y r" be given.(a) if ||x|| = ||y|| = 1 and

Let x, y R" be given.(a) If ||x|| = ||y|| = 1 and x...

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Algebra

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Let x, y R" be given.(a) If ||x|| = ||y|| = 1 and x * y = 1, show that x = y.(b) If ||x|| ? 1 and ||y|| ? 1, prove that ?(1 - ||x||) ?(1 - ||y||) ? 1 ? |x y|.

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