1. Matlab Workshop
Getting Started

8. Command Window
Editor

9. Matlab As A Really Fancy Calculator
In the command window enter the following:
1+2

10. Matlab As A Really Fancy Calculator
In the command window enter the following:
1+2

11. Addition
In the command window enter the following:
1+2+3

12. Subtraction
In the command window enter the following:
5-3

13. Multiplication
In the command window enter the following:
4*6

14. Division
In the command window enter the following:
15/3

15. Exponents
In the command window enter the following:
2^3

16. Brackets In the command window enter the following: Now try: 1+2*3
(1+2)*3
Evaluated first
Evaluated first

17. Matrices
In the command window enter the following:
[1 2; 3 4]

18. Matrix Multiplication
In the command window enter the following:
[1 2; 3 4]*[2 1; 3 4]

19. Pointwise Multiplication
In the command window enter the following:
[1 2; 3 4].*[2 1; 3 4]
“Point-wise multiplication”

20. Matrix Division In the command window enter the following:
[1 2; 3 4]/[2 1; 3 4]

21. Point-wise Matrix Division
In the command window enter the following:
[3 8; 15 24]./[3 4; 5 6]
“Point-wise division”

22. Trigonometry In the command window enter the following: sin(1.57)
cos(1.047)

23. Trigonometry
In the command window enter the following:
tan(0.7854)

24. Trigonometry In the command window enter the following: asin(0.4794)
acos(0.8776)
atan(0.2553)

25. Variable Assignment In the command window enter the following:
This creates a variable called “a” and assigns it a value of 2.

26. Variable Assignment
Q: Why did it say a = 2 after I hit enter? A: Because if you don’t end the line with “;” then Matlab prints out the result of your operation.

27. Suppressing Output
b = 3;

28. Suppressing Output
b = 3;
No extra output!

29. Let’s make another variable
c = 5;

30. Now We Can Do Math With Our Variables
In the command window enter the following:
a+b
b*c
a+b*c

31. Variable Types
a = 2; b = 2.75;
Integer
Rational Number

32. Variable Types
c = ‘z’; d = ‘hello’;
Character
String

33. Variable Types
e = [2 3]; f = {3,2};
Array
Cell Array

34. Variable Types
h = [2 1; 3 4];
Matrix

35. Variable Types
g.Name = 'Me'; g.Age = 28;
Structure Array

36. Indexing Each variable type has a particular indexing syntax:
h(2,1) % Matrices are indexed by row and then column
a(1) % Integers are special cases of matrices
b(1) % So are rational numbers
c(1) % So are characters
d(2) % So are strings
e(2) % So are arrays
f{2} % Cells are indexed using curly braces
g.Name % Struct arrays are indexed using the "." notation

37. Indexing Each variable type has a particular indexing syntax:
h(2,1) % Matrices are indexed by row and then column
a(1) % Integers are special cases of matrices
b(1) % So are rational numbers
c(1) % So are characters
d(2) % So are strings
e(2) % So are arrays
f{2} % Cells are indexed using curly braces
g.Name % Struct arrays are indexed using the "." notation

38. Math With Variables
a+b a-b a*b a/b sin(a) cos(a) tan(a) log(a) exp(a) h*h h.*h h/h