Explain how the microstructure of 40% Sn - 60% Pb alloy forms as it is cooled from liquid state. Be sure to explain: different phases present, where the eutectic forms and when it forms.

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.

where is the photo and the answer choices?