MATLAB – What Is It ? Name is from matrix laboratory Powerful tool for Computation and visualization of engineering and science mathematics Communication of ideas Programming: Built-in editor, debugger, and help Many predefined functions (grouped in toolboxes) Interpreted or compiled programs

How Do We Want To Use MATLAB In This Course? Write a Simple MATLAB Program to Do the Following: - Perform Particular Calculations Display/Plot Particular Results for Interpretation

Creating Your Own Program Script (m-file) Concept M-file is a collection of MATLAB commands Can be re-executed Is easily changed/modified or e-mailed to someone File format: Name.m Commands are executed one by one sequentially File is executed by typing its name (without .m) Results appear in the command window (or use ; ) Can be created using any text editor, but is most easily developed in MATLAB Editor Window

Boot Up Default MATLAB Window Help menu provides answers to most questions Opens Editor Window to create new program In this window: - type & edit commands - test & run program - save work when finished

Demo MATLAB Code Calculate & Plot Equation: y=2x+30x2-2x3 Dot needed for element-by-element operation Semicolon used to suppress output to Command Window – commonly desired

Plotting Line Specifiers Line Specifiers Change the Look Especially Handy When Plotting Several Lines on Same Graph Use Help Menu to Find Out More