The matrix exponential has applications to systems of linear differential equations. Polynomial interpolation is a generalization of linear interpolation. DSP can involve linear or nonlinear operations. It is used to solve systems of linear differential equations. There are several algorithms for solving a system of linear equations. Another application of matrices is in the solution of systems of linear equations. Systems with more variables than the number of linear equations are called underdetermined. The treatise provided for the systematic solution of linear and quadratic equations. Diagonal matrices occur in many areas of linear algebra. It supports strict conservation of linear and angular momentum. Greedy GQ is a variant of "Q"-learning to use in combination with (linear) function approximation. Convolution is a specialized kind of linear operation. They range in structure from linear to highly branched. Superposition principle is only available for linear systems. Consider an example of linear supply and demand curves.