Application of Matrix in Economic Life
Determinants can be used flexibly to find the minimum sum of costs and other similar problems;
We can "borrow" eigenvalues and eigenvectors to predict the pollution degree in a few years.
Application in population flow.
This is the application of higher-order power of matrix, such as forecasting the future population and population development trend.
Application of Matrix in Cryptography
Reversible matrix and its inverse matrix can be used to encrypt and decrypt secret messages to be sent.
Application of Matrix in Document Management
For example, modern search often includes millions of files and thousands of keywords, but the sparsity of matrices and vectors can be used to save computer storage space and search time.