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Introduction • MATLAB(matrix laboratory) is a fourth generation high level programming language and interactive environment for numerical computation.

• Developed by MathWorks.

• It allows Matrix manipulations; plotting of function and data and implementation of algorithms.

• It has numerous built-in commands and math functions will help you in mathematical calculations.

MATLAB Features • It is a high level language for numerical computations.

• It also provides an interactive environment for iterative exploration.

• It provides tools for building applications custom graphical interfaces • It provides functions for integrating MATLAB based algorithms with external applications and languages such as C, Java, .NET and Microsoft Excel.

Uses of MATLAB • MATLAB is widely used as a computational tool in science and engineering encompassing the fields of physics, chemistry, math and all engineering streams.

It is used in a range of applications including: • Signal Processing and Communications • Image and Video Processing • Control Systems • Test and Measurement • Computational Finance • Computational Biology

How To Install MATLAB • MathWorks provides the licensed product, a trial version and a student version as well. You need to log into the site and wait a little for their approval. • Once you get the download link, as I said, it is a matter of few clicks.

After Installation: You can launch MATLAB development IDE from the icon created on your desktop. The main working window in MATLAB is called the desktop. When you start MATLAB, the desktop appears in its default layout.

First, let's create a simple vector with 9 elements called a.

BASIC MATRIX OPERATION- MATLAB • This example shows basic techniques and functions for working with matrices in the MATLAB® language. Let’s create a simple vector with 9 elements called a. a=[1 2 3 4 6 4 3 4 5] Now, let’s add 2 to each element of our vector, a, and store the new result in a new vector. b=a+2 New vector, b = 3 4 4 6 8 6 5 6 7 Creating graph in MATLAB is as easy as one command. plot(b) grid on

MATLAB Advantages • MATLAB is an interpreted language for numerical computation. It allows one to perform numerical calculations, and visualize the results without the need for complicated and time consuming programming. MATLAB allows its users to accurately solve problems, produce graphics easily and produce code efficiently.

MATLAB Disadvantage • Because Matlab is an interpreted language, it can be slow, and poor programming practices can make it unacceptably slow.

Some Hints: • Looping is done with for command, the syntax is: >>for i = first increment = last commands end The default increment is one. For example, >> for i=1:n sum = sum + x(i)*y(i); end

Hint 2: • Conditional statements are evaluated with the if, while and switch commands. The syntax for if is: >> if expressions commands elseif expressions commands else commands end

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