Join IDNLearn.com today and start getting the answers you've been searching for. Join our knowledgeable community to find the answers you need for any topic or issue.

Suppose vinV and v!=0 . Prove that (v)/(| |) |v|| | is the unique closest element on the unit sphere of V to v . More precisely, prove that if uinV and ||u||=1 , then ||v-(v)/(||v||)||<=||v-u||,