Comments in MATLAB

Comments are an integral part of any programming language. Comments help to identify program purpose and explain the work of particular statements in a program. Comments also allow others to understand the code. Comments can be used as help for a program. Suppose, You...

Size and end function in MATLAB

size() Function size() function returns two values specifying the number of rows and columns of any matrix. For example: >> A=[1 2 3 7 4; 4 5 8 4 -3; 0 5 9 0 -3; 2 1 7 3 0 ]; >> [m n]=size(A) m = 4 n = 5 end Function MATLAB provides a special function...

Vectors and Matrices in MATLAB

A vector is a list of elements. Elements should be separated by comma or space for row vector and semicolon for column vector. For example: >> B = [5 6 7] B = 5 6 7 >> b= [23; 34; 12] b = 23 34 12 A matrix is a rectangular array of numbers. Row and column...

Variables and Assignments in MATLAB

In MATLAB, we use the equal sign to assign values to a variable. For example: >> u = 9 u = 9 Henceforth, MATLAB always takes the value of the variable u as 9. For example: >> u*2 – 2*u + u ans = 9 Note that MATLAB never forgets used variables unless...

Basic Operations in MATLAB

In the Command Window, we see: >>: This notation >> is called the prompt. In the Command Window, MATLAB can be used interactively. It means that MATLAB command or expression can be entered, and MATLAB immediately responds with the result. For example, this...

MATLAB

Introduction MATLAB is a standard tool which has been included in introductory and advanced courses in applied mathematics, engineering, science and economics in many universities around the world. In industry, it is a tool of research, development, and analysis....

Linear Equations

Consider  linear equations in  unknowns namely of   as: Equivalently, Associated with this system of equations is the matrix: Consider the  matrix We can apply elementary row operations in the matrix A to get the matrix in reduced form. An elementary row operation on...

History of Linear Programming

We are presenting a theory whose official birth was at the heart of the twentieth century and in fact in the years right after the Second World War. However, all the readers are familiar with the method of Lagrange multipliers from Calculus, named after Joseph Louis...

What Is the Finite Volume Method?

The Finite Volume Method (FVM) is a numerical technique that transforms the partial differential equations representing conservation laws over differential volumes into discrete algebraic equations over finite volumes (or elements or cells). In a similar fashion to...

MATLAB®/Simulink® Functions—An Overview

MATLAB® is a high-performance language for technical computing. It integrates computation, visualization, and programming in an easy-to-use environment where problem and solution are expressed in familiar mathematical notation. MATLAB is an interactive system whose...

Getting into MATLAB

MATLAB is a mathematical and graphical software package with numerical, graphical, and programming capabilities. It includes an integrated development environment, as well as both procedural and object-oriented programming constructs. It has built-in functions to...

step and impulse function in MATLAB

MATLAB provides built-in functions for unit step function u(t) and unit impulse function δ(t). The unit step function is called Heaviside or stepfun, while the impulse function is Dirac. Heaviside(t) is zero when t < 0, 1 for t > 0 and 0.5 for t =...

Support Vector Machine

SVM classifier is one of the latest and most successful supervised learning classifiers and has been widely applied for image classification due to its efficiency. Using training labeled samples, a statistical model is constructed and then new samples can be...

Sorting in MATLAB

Sorting is the process of putting a list in order-either descending (highest to lowest) or ascending (lowest to highest) order. For example, here is a list of n integers, visualized as a column vector.   What is desired is to sort this in ascending order in...

Tables in MATLAB

A table is a data structure that stores information in a table format with rows and columns, each of which can be mnemonically labeled. For example, the following uses the table function to store some simple information for a doctor’s patients. >>names=...