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Inner Product Spaces - Linear Algebra Done Right

Linear Algebra Done Right, third edition, by Sheldon Axler. 164 CHAPTER 6 Inner Product Spaces 6.A Inner Products and Norms Inner Products x Hx , x L 1 2 The length of this vectorp xis x 1 2Cx 2 2. To motivate the concept of inner prod-uct, think of vectors in R2and R3as arrows with initial point at the origin.

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