Homogeneity and heterogeneity are concepts relating to the uniformity of a substance, process or image. A homogeneous feature is uniform in composition or character (i.e. color, shape, size, weight, height, distribution, texture, language, income, disease, temperature, radioactivity, architectural design, etc.); one that is heterogeneous is distinctly nonuniform in at least one of these qualities.
TL;DR Summary: I have to find a system of equations with this solution ## {(1,2,0,3)^T+t(1,1,1,-2)^T+s(1,-1,3,0)^T;s,t \in \mathbb{R}} ## when we know that matrix of this equation has:
1. two non-zero rows
2. 3 non-zero rows.
My idea is that I could somehow use the fact that...