How long does it take the car to pass the train if the car and train are traveling in opposite directions?.

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.

distance = 150m

displ = root (50 ^2 + 100^2)

root(2500+10000)

root 125000