说明：  no intro
(1) Efficient numerical calculation and symbolic calculation functions can free users from complicated mathematical operation and analysis; 2) It has complete graphics processing function to realize visualization of calculation results and programming. 3) Friendly user interface and natural language close to mathematical expressions make it easy for scholars to learn and master. 4) Application toolbox with rich functions (such as signal processing toolbox, communication toolbox, etc.) provides users with a large number of convenient and practical processing tools.)