... am especially grateful to Ron Cenfetelli,Barry Davignon, Konstantinos Kariotis, Koward Koswara, Hidajat Harintho, HariSalemganesan, Joe Keswari, Yanping Lu, and Khailan Zhang for checking and ... matrix is a rectangular array of quantities arranged in rows and columns that isoften used as an aid in expressing and solving a system of algebraic equations. As examplesof matrices that will ... elementphfunctional for heat-transfer problempptotal potential energyr mass density of a materialrwweight density of a materialo angular velocity and natural circular frequencyW potential energy...