👉 Lineature in physics refers to a type of linear system that consists of two or more linearly coupled systems. The goal is to find the steady-state solutions for these systems by using techniques from linear algebra, such as eigenvalues and eigenvectors. In simple terms, "linearity" means that the output (or response) of one system depends only on the inputs (or states) of another system. In other words, if you have a system with two input signals x1(t)