Elementary algebra starts with the simplest one-dimensional linear equation. On the one hand, elementary algebra further discusses binary and ternary linear equations, on the other hand, it studies equations that are larger than quadratic and can be reduced to quadratic. Along these two directions, algebra discusses the linear equations with any number of unknowns, also known as linear equations, and also studies the univariate equations with higher degrees.
This stage is called advanced algebra. Advanced algebra is a general term for the development of algebra to an advanced stage, including many branches. Higher algebra offered by universities now generally includes two parts: linear algebra and polynomial algebra.
Life application
With the development of post-modern digital computer in World War II, matrix has a new meaning, especially in the numerical analysis of matrix. Due to the rapid development and wide application of computers.
Many practical problems can be solved quantitatively by discrete numerical calculation. Therefore, as a linear algebra dealing with discrete problems, it has become an indispensable mathematical basis for scientific and technical personnel engaged in scientific research and engineering design.