1 M A T L A BEng. Osama Talaat

osama063@msn.com

Faculty of Engineering, Zagazig University, Egypt 2013

2 Course Web Page

www.osamatalaat.com/matlab You can also navigate to it by:

www.osamatalaat.com >> Teaching >> Matlab.

You shall find lecture materials and course resources.

Bookmark this page and keep visiting it regularly after each lecture to download its material.

3 About MATLAB

Calculator

Programming Language

Toolboxes

Simulation

Solving EquationsMatricesGraphs

CommunicationControl SystemsImage Processing

Simulink

Console programsGUI

4Lecture (1)

IntroductionEng. Osama Talaat

5 MATLAB R2013a Latest version – Download from the webpage.

6 MATLAB Setup

OpenMATLAB

7 Arithmetic Operators

10 + 2

10 – 2

10 × 2

8 Arithmetic Operators

102

10 2

/ \

9 Layout: Command Window Clear command window using GUI

Clear command window using Commands

>> clc

10 Layout: Command History

Clear command history

11 Layout Controllers Undock Dock

Maximize Restore.

Minimize Restore.

Move the tab.

12 Variables

قيمة مباشرة

ناتج عملية حسابية

متغير من آخر

13 Variables

متغير من نفسه

NB: Names (variables, files, …) characters & Numbers, but starts with char.

No spaces.

No symbols except underscores (_).

Case sensitive (also commands).

Maximum length = 64 (increasing value).

NB: display variable value.

14 Note: Simi-Colon (;)

15Note: Multiplying by

variable

No implicit multiplying sign

16 Layout: Workspace

Save variables …

17 Layout: Current Directory Current Directory

address bar.

Change Current Directory.

18 Layout: Workspace Save variables:

Ctrl + S

GUI

Code

>> save osama.mat

Clear workspace using GUI and Code.

>> clear a

>> clear b c

>> clear

Load saved variables:

Ctrl + O

Code

>> load osama.mat

19 Special Values: ans

ناتج آخر

عملية حسابية لم يتم

تخزينها

20 Special Values: PI, INF

Infinity

21 Special Values: NaN

كميةغير

محددة

22 Trigonometric Functions>> sin(x)

>> cos(x)

>> tan(x)

>> sec(x)

>> csc(x)

>> cot(x)

>> sind(x)

>> cosd(x)

>> tand(x)

>> secd(x)

>> cscd(x)

>> cotd(x)

Radian by default

Degrees

23 Inverse Trigonometric Functions

Radian Degrees Maths

>> asin(x) >> asind(x)

>> acos(x) >> acosd(x)

>> atan(x) >> atand(x)

>> asec(x) >> asecd(x)

>> acsc(x) >> acscd(x)

>> acot(x) >> acotd(x)

24 Hyperbolic Functions>> sinh(x)

>> cosh(x)

>> tanh(x)

>> sech(x)

>> csch(x)

>> coth(x)

>> asinh(x)

>> acosh(x)

>> atanh(x)

>> asech(x)

>> acsch(x)

>> acoth(x)

25 Other Mathematical Functions

>> log10(100)

>> log2(1024)

>> log(3)

>> exp(3)

>> abs(-12)

>> sqrt(16)

>> nthroot(27,3)

26 Test yourself If x=1 calculate the following:

>> x=1;

>> f=( 5*log10(x)+2*x^3*sin(x)+log(x)*sqrt(x) ) / ( exp(6*x^2)+3*x^4+cos(x) )

f =

0.0041

27 Other Mathematical Functions

إيجاد األعداد األولية حتى

10الرقم

اختبارهل

العدد أولي أم ال

28 Other Mathematical Functions

تحليل العدد إلى مكوناته األولية

مضروب العدد

29 Complex Numbers

i or j

30 Complex Numbers

Using i or j as

variables

implicit multiplying

sign

31 Complex Numbers

القيمة المطلقة للعدد

المركب

زاوية العدد المركب

المرافق

32 Complex Numbers

الجزء الحقيقي

الجزء التخيلي

اختبار وجود جزء تخيلي من

عدمه

33 Complex Numbers

34 Approximation Functions

Normal

Approximation

35 Approximation Functions

Round

towards

positive

infinity

36 Approximation Functions

Round

towards

negative

infinity

37 Approximation Functions

Round

towards

Zero

38 Approximation Functions

Round

towards

Zero

39 Help !! Demos.

40 MATLAB Tips>> bench

41GOOD LUCK

To be continued in the next lecture …