Describe how the average speed of the cyclist can be measured. In your account, suggest what equipment is used, the measurements that are made and how the average speed is calculated

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.

their crystal patterns have been disrupted by stress