Introduction to Matlab

Introduction to Matlab By Dr. Adil S. Balghonaim

Matlab Matrix Laboratory The program is capable of doing matrix algebra on all type of matrix

Create new folder and rename it Short cut for Matlab

You also can start matlab from desktop as follows Start All Programs Matlab

Command line

Start programming >> a=3 a = 3 >>

Semicolon “ ; ” at the end of a statement will not print the value in the screen >> b=4 ; >> However the variable “ b “ with the value 4 is still there and can be used >> b b = 4 >>

>> c=a+b c = 7 >> sqrt(c) ans = 2.6458 >> If you did not specify a variable for the result it will store it at “ ans”

You also can make a program and execute the sequence of commands File M-File

File name File type is *.m

Directory were Matlab access You either move you’re the M-file you just Created (p1.m ) to that directory OR Change the current directory to were the file reside In that case change it to the EE 207 –Matlab folder In the desktop

EE 207 –Matlab folder in the desktop

Click here to Change the directory

Now you are at the same directory were the file And matlab can be excuted

>> p1 will execute the file p1.m Line by line Result c = 7

Vectors >> a=[1 2 3] a = 1 2 3

Complex Numbers >>a=3+(j*4) a = 3.0000 + 4.000 i >>angle(a) ans = 0.9273 >>abs(a) ans = 5 radian

>>angle(a) ans = 0.9273 radian >> angle(a)*180/pi ans = 53.1301 degree

>>b=12+(4*i) b = 12.0000+4.000i >> a+b ans = 15.0000 + 8.0000 i

Introduction to Matlab