Object a has a position as a function of time given by object b has a position as a function of time given by . what is the distance between object a and object b at time ?

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.

the answer is b ) square root of 5