Asubway train is traveling at a rate of 22.4 m/s. brakes are applied and it slows down at a constant rate of 3.5 m/s2 until it stops at a station. find the total distance traveled while braking. 274 m 142 m 72 m

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.