For two vectors prove that we have the identity
What geometric theorem can you deduce from this identity?
Proof. We compute
For two vectors prove that we have the identity
What geometric theorem can you deduce from this identity?
Proof. We compute
Is the geometric identity the one that the sum of squares of diagonals equals two times the sum of squares of non paralel sides ? To be more precise this one :- https://en.wikipedia.org/wiki/Parallelogram_law