Calculus and differential equations pdf

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calculus and differential equations pdf

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Oxford, U. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without prior written permission of the publisher. There are so many kinds of books for me to read. Some bring me joy; Some give me knowledge and entertainment. I therefore read every day.

Books present a diversity of subjects, For readers to explore for their own pleasure. Since there is so much that can be discovered in books, I will continue reading for the rest of my life without getting bored.

MATLAB is a software widely used to solve mathematical problems that arise in the fields of science and engineering. These problems require profound understanding in the fundamentals of calculus and differential equations.

MATLAB can solve many types of calculus problems and differential equations symbolically for exact closed-form expressions. If their exact solutions are not available, approximate solutions are obtained by using numerical methods.

Essential topics in the calculus and differential equation courses are selected and presented. These topics include: limit, differentiation, integration, series, special functions, Laplace and Fourier transforms, ordinary and partial differential equations.

Numerous examples are used to present detailed derivation for their solutions. Students thus understand detailed mathematical process for obtaining solutions. They, at the same time, realize the software capability that can provide the same solutions effectively within a short time. The solutions are then plotted to provide clear understanding of their behaviors. The author would like to thank Miss Kaiumporn Phong-khachorn for her fine typing and his graduate students for proof-reading the manuscript.

He would like to thank Chulalongkorn University Press and Alpha Science International for printing and distributing this book. He appreciates his wife Mrs. Yupa Dechaumphai for her support while writing this book. However, some students may not realize the importance of these subjects and simply take them for fulfilling their degree requirement.

Such subjects, in fact, are essential because they are basis toward studying higher level courses so that more realistic problems can be solved.

Most of the commercial software for design and analyzing scientific and engineering problems today were developed based on the knowledge of mathematics and computational methods. As scientists or engineers, solutions obtained from solving mathematical problems must be further interpreted so that their physical meanings are understood. They prefer to obtain solutions without spending a lot of time deriving them.

There are many software today that can provide solutions to a large class of mathematical problems. These software can be used for finding roots of algebraic equations, taking derivatives and integrating functions, including solving for solutions of many differential equations.

As a simple example, the software can perform integration, 3. It was quite astonishing at that time because the solutions can be shown in the form of symbolic expressions instead of numbers. Lately, many symbolic manipulation capabilities of the software have been improved and can be used to ease learning calculus and differential equations.

Basic formulas are required for finding deriva- tive or integral of a given function. Few examples for finding solutions after taking derivative and performing integration of some functions are highlighted below. With the help of symbolic computer software, the solution can be obtained instantly without any error. In addition, if the tenth or other higher-order derivatives of the above function are needed, the software can provide correct solutions in a very short time as well. Example Integration is another topic learned in calculus course that many students do not appreciate.

This is because they have to memorize many formulas and do not know when it will be used for solving realistic problems. Example Symbolic computer software can help us to solve some other types of problems that require a long time to do by hands. Example Solving differential equations is another topic that most students do not like.

This is because they are many approaches to follow depending on the types of differential equations. With the symbolic computer software, the above solutions can be obtained instantly. The software can also plot the solution behavior so that students understand its physical meaning clearly.

Later, in , Jack Little founded the Mathworks company to commercialize the software. The key capability of the software was to apply mathematical and computational methods through the use of matrices for solving academic problems. Soon, the software has received popularity mainly because of its ease of using. Such additional capability further increases the MATLAB popularity because a large class of mathematical problems can now be solved.

The output solutions are in the forms of symbolic mathematical expressions instead of numbers. These solutions significantly help students in learning calculus and differential equation courses. This book concentrates on how to use MATLAB to provide solutions in the forms of symbolic expressions similar to what we have learnt in classes. Selected topics which are important in calculus and differential equation courses are presented. We will see that the same solutions are obtained instantly without any error from the software.

Because this book concentrates on solving calculus problems and differential equations, only essential commands related to these topics are presented herein. The command syms above is used to declare the specified variable as a symbol. These commands help reducing the complexity of the final symbolic expressions.

Some useful commands are described herein. The collect command expands the given expression and then collects similar terms together. For example,. These detailed expres- sions are omitted herein. The pretty command is another useful command for transforming a symbolic expression into the rational form similar to those shown in textbooks. A plot of the w function will appear on the screen with the axis scaling adjusted automatically. In this case, the commands are as follows. If preferred, we can include all the commands above in an m-file so that plotting details can be modified easily.

The software helps finding solutions of basic problems learned in calculus and differential equation courses. These include: finding derivatives of functions, perform both definite and indefinite integrations, as well as solving for exact solutions of some differential equations. At present, there are many symbolic manipulation software suitable for learning and using in research work. Few important commands were explained by using examples. These commands can help manipulating complex expressions and reduce them into simple forms.

The solutions are plotted by using easy commands so that users can understand their physical meanings quickly.

We will appreciate these advantages in more details when we study essential calculus and differential equation topics in the following chapters. Determine the product of the function f and g for each sub- problem. Use the plot command to display the functions in Problem 9 again by showing essential details of their variations. Study capabilities of the Mathematica and Maple software.

Then, use the plot command with appropriate scaling in both the horizontal and vertical directions to show their variations. Suggest on how to plot the function when x approaches zero so that the variation is shown clearly. Chapter 2. It contains two main topics which are the differentiation and integration of functions.

The former one is based on understanding the determination of limits. Often, many students do not enjoy studying these topics because they have to memorize formulas for deriving solutions. Some solutions require a long time to derive by employing specific techniques. With the capability of the symbolic manipulation software today, solutions to calculus problems can be obtained rapidly.

Students can compare solutions obtained from the software with those derived by hands. So they will have more time to understand the meanings of the solutions. This chapter shows standard techniques to derive the solutions before using MATLAB commands to confirm the validity of them. Several examples will be presented with detailed derivation for the solutions. These solutions will also be plotted to increase understanding of their phenomena.

The result cannot be determined and is not correct. To find the correct solution, we should observe the variation of this function g x by plotting. From the figure, the function g x becomes 2 as x approaches 1.

Finding limits of functions may require different methods depending on the function types. The examples below show standard techniques to determine limits for different types of functions. The technique of multiplying by the conjugate value as shown in the preceding example is not applicable. A different technique of multiplying the numerator and denominator by an appropriate function is needed.

If the given function is more complex, the same limit command still provides solution immediately as demonstrated by the following examples. This is because the physics of most science and engineering problems are described by differential equations. Differential equations contain terms that are derivatives of the unknown variables. Finding for these unknown variables is the main objective for solving the differential equations. Thus, knowing how the derivatives of a function can be found is the first step toward learning the differential equations.

To find derivatives of a function as learned in classes, we need to apply basic formulas.

Calculus and Differential Equations with MATLAB.pdf

This is a recurring theme in calculus: Big things are made from little things. For more than half a century, this text has been revered for its clear and precise explanations, thoughtfully chosen examples, superior figures, and time-tested exercise sets. How to Solve Differential Equations. Dierential calculus is about describing in a precise fashion the ways in which related quantities change. Add Your Comments.

To browse Academia. Skip to main content. By using our site, you agree to our collection of information through the use of cookies. To learn more, view our Privacy Policy. Log In Sign Up. Download Free PDF. Astronomy Projects for Calculus and Differential Equations.

As we get the chapters scanned in, they will become highlighted so that you can click on them to read. Tate and W. This text is somewhat unusual for two reasons. The proofs of most of the major results are either exercises or. Front Cover. For more than half a century, this text has been revered for its clear and precise explanations, thoughtfully chosen examples, superior figures, and time-tested exercise sets. Differential Calculus for Beginnersby Joseph Edwards.

Before starting our discussion of calculus and differential equations, it is interesting to spend a few moments looking at the roots of mathematics.

Calculus and Ordinary Differential Equations

Don't forget to refer to your hand written notes from lectures. They are probably the best useful notes you will have! Limits example: making a function continuous PDF. Logarithms and exponentials example PDF.

This second of two comprehensive reference texts on differential equations continues coverage of the essential material students they are likely to encounter in solving engineering and mechanics problems across the field - alongside a preliminary volume on theory. Stochastic Differential Equations for the Social Sciences by Loren Cobb Abstract Stochastic differential equations are rapidly becoming the most popular format in which to express the mathe-matical models of such diverse areas as neural networks, ecosystem dynamics, population genetics, and macro-economic systems. I'd have to anti-differentiate to get velocity. Let f be a continuous function of twith a piecewise-continuous rst derivative on every nite interval 0 t Twhere T2R. Applications of Differential Equations in Economics.

Professor Pearson's book starts with an introduction to the area and an explanation of the most commonly used functions. It then moves on through differentiation, special functions, derivatives, integrals and onto full differential equations. As with other books in the series the emphasis is on using worked examples and tutorial-based problem solving to gain the confidence of students.

Application Of Differential Equations Pdf

Application Of Differential Equations Pdf

Oxford, U. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without prior written permission of the publisher. There are so many kinds of books for me to read. Some bring me joy; Some give me knowledge and entertainment.

Oxford, U. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without prior written permission of the publisher. There are so many kinds of books for me to read.

Introduction to differential equations. Calculus and Differential Equations I. A simple differential equation. Is there a function which is equal to its derivative? 1.

Calculus and Ordinary Differential Equations

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