The vector formula of polarization identity introduces that polarization identity is an important equation that connects inner product with norm, and it is a formula that expresses inner product with norm. Let h be the inner product space and ‖ be the norm (‖) derived from the inner product. The following equation is usually called polarization identity: (x, y) = (1/4) (‖ x+y ‖ 2-‖ when h is a real space. When h is a complex space, (x, y) = (1/4) (‖ x+y ‖ 2-‖ x-y ‖ 2+i ‖ x+iy ‖ 2-i ‖.
Application of vector formula of polarization identity
The above is some information about polarized identity, I hope it will help you.