What is energy? a change that appears in an object when force is applied the property of a body that gives it mass the amount of heat produced by a body the ability of an object to undergo change the ability of a body to move

a change that appears in an object when force is applied

i think it because equal matrices have equal dimensions, only square matrices can be symmetric. for all indices and . every square diagonal matrix is symmetric, since all off-diagonal elements are zero. in linear algebra, a real symmetric matrix represents a self-adjoint operator over a real inner product space.