Lol tell me interesting things, i dk tired, bored

Explanation:

My hotdog is bigger than my pencil

Oxygen is a corrosive gas

Explanation:

Oxygen is a corrosive gas and our atmosphere only contains about 20% of it. This is the sweet spot for us humans because more than 20% would cause damage to our respiratory system, eyes, and central nervous system.

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.