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Posted: **Tue Sep 07, 2021 7:14 am**

: 1 Let X Be An Inner Product Space Using The Parallelogram Identity To Prove By Few Lines The Appolonius Identity Llz 1 (8.23 KiB) Viewed 394 times

1. Let X be an inner product space. Using the parallelogram identity to prove by few lines the Appolonius Identity: llz-xf+la- y = x - x [ +21=-(x + )|| 2. Prove that the norm function f(x) = ||*||- x - R on a vector space X is continuous.