Complete the paragraph to describe binary systems. A binary star system is made of
stars, one of which is brighter than the other. Astronomers are able to detect the dimmer star because its gravity causes the bright star to
. Astronomers can also spot the dimmer star by observing a phenomenon called a(n)
binary. This happens when the dim star passes in front of the bright star.

t.                 w               e                 n                   t                 y                 c             h               a           r           a               c                 t             e             r             s        

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 duration of a photographic flash is related to an rc time constant, which is 0.100 μs for a certain camera.