M A T L A B Eng. Osama Talaat Faculty of Engineering, Zagazig University, Egypt

Course Web Page  You can also navigate to it by: >> 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. 2

About MATLAB Calculator Programming Language Toolboxes Simulation 3 Solving Equations Matrices Graphs Communication Control Systems Image Processing Simulink Console programs GUI

Lecture (1) Introduction Eng. Osama Talaat 4

MATLAB R2013a  Latest version – Download from the webpage. 5

MATLAB Setup 6 Open MATLAB

Arithmetic Operators – 2 10 × 2 7

Arithmetic Operators 10 2 / \ 8

Layout: Command Window  Clear command window using GUI  Clear command window using Commands >> clc 9

Layout: Command History  Clear command history 10

Layout Controllers 11

Variables 12 قيمة مباشرة ناتج عملية حسابية متغير من آخر

Variables 13 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.

Note: Simi-Colon (;) 14

Note: Multiplying by variable 15 No implicit multiplying sign

Layout: Workspace  Save variables … 16

Layout: Current Directory  Current Directory address bar.  Change Current Directory. 17

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 18

Special Values: ans 19 ناتج آخر عملية حسابية لم يتم تخزينها

Special Values: PI, INF 20

Special Values: NaN 21 كمية غير محددة

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) 22 Radian by default Degrees

Inverse Trigonometric Functions 23 RadianDegreesMaths >>asin(x)>>asind(x) >>acos(x)>>acosd(x) >>atan(x)>>atand(x) >>asec(x)>>asecd(x) >>acsc(x)>>acscd(x) >>acot(x)>>acotd(x)

Hyperbolic Functions 24 >> sinh(x) >> cosh(x) >> tanh(x) >> sech(x) >> csch(x) >> coth(x) >> asinh(x) >> acosh(x) >> atanh(x) >> asech(x) >> acsch(x) >> acoth(x)

Other Mathematical Functions 25 >> log10(100) >> log2(1024) >> log(3) >>exp(3) >> abs(-12) >>sqrt(16) >>nthroot(27,3)

Test yourself 26

Other Mathematical Functions 27 إيجاد الأعداد الأولية حتى الرقم 10 اختبار هل العدد أولي أم لا

Other Mathematical Functions 28 تحليل العدد إلى مكوناته الأولية

Complex Numbers 29 i or j

Complex Numbers 30 Using i or j as variables implicit multiplying sign

Complex Numbers 31 القيمة المطلقة للعدد المركب زاوية العدد المركب المرافق

Complex Numbers 32 الجزء الحقيقي الجزء التخيلي اختبار وجود جزء تخيلي من عدمه

Complex Numbers 33

Approximation Functions 34 Normal Approximation

Approximation Functions 35 Round towards positive infinity

Approximation Functions 36 Round towards negative infinity

Approximation Functions 37 Round towards Zero

Approximation Functions 38 Round towards Zero

Help !!  Demos. 39

MATLAB Tips >> bench 40

GOOD LUCK To be continued in the next lecture … 41