第2章MATLAB应用基础.PDF

2 MATLAB 2 MATLAB What is MATLAB? MATLAB MATLAB 7.x MATLAB What is MATLAB? MATLABMATrix+LABoratory Cleve Moler/Chief Scientist Jack Little/President What is MATLAB? MATLAB MATLAB Examples: Matrix computations and linear algebra Solving nonlinear equations Numerical solution of differential equations Mathematical optimization Statistics and data analysis Signal processing Modelling of dynamical systems Solving partial differential equations Simulation of engineering systems Construction Core functionality: compiled C-routines Most functionality is given as m-files, grouped into toolboxes m-files contain source code, can be copied and altered m-files are platform independent (PC, Unix/Linux, MAC) Simulation of dynamical systems is performed in Simulink Sig. Proc Contr. Syst. Simulink C-kernel m-files MATLAB MATLAB 7.x MATLAB7.6(R2008a) 8000 MATLAB6.5 MATLAB 7.x MATLAB 7.x Matlab is an interpreted language Commands are typed into the COMMAND Window and executed immediately Variables are allocated in memory as soon as they are first used in an expression Commands must be re-entered to be re-executed All variables created in the Command Window are in what is called the Base Workspace Variables can be reassigned new val