2. ………. can be used to lift load to the roof of a house

'No options'

lifting equipment ig

Explanation:

I think it's this. I'm not a native English speaker I'm trying to help smh

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.