1. Let X be an inner product space. Using the parallelogram identity to prove by few lines the 2 Appolonius' identity: 1
Posted: Tue Sep 07, 2021 7:12 am
1. Let X be an inner product space. Using the parallelogram identity to prove by few lines the 2 Appolonius' identity: 1]z – xl|2+1z – yl2 = }}\x – yll2 +2 ||z-(x+y)