Mata2_Vezba1

>> A=[3,5,7;4,1,2;7,-1,0]

A =

     3     5     7
     4     1     2
     7    -1     0

>> B=[2,4,6,8,10]

B =

     2     4     6     8    10

>> C=[3;6;9;12;15]

C =

     3
     6
     9
    12
    15

>> B=2:2:10

B =

     2     4     6     8    10

>> C=3:3:15

C =

     3     6     9    12    15

>> C'

ans =

     3
     6
     9
    12
    15

>> B=linspace(2,10,5)

B =

     2     4     6     8    10

>> D=1:1:10

D =

     1     2     3     4     5     6     7     8     9    10

>> F=9:-3:-3

F =

     9     6     3     0    -3

>> A(2,3)

ans =

     2

>> A(1:3,3)

ans =

     7
     2
     0

>> A(2,:)

ans =

     4     1     2

>> A(:,:)

ans =

     3     5     7
     4     1     2
     7    -1     0

>> A(2:3,2:3)

ans =

     1     2
    -1     0

//uzimaju se vrednosti unazad//

>> B=A(2:3,3:-2:1)

B =

     2     4
     0     7

//jedinicna matrica//

>> eye(2)

ans =

     1     0
     0     1

>> eye(3,2)

ans =

     1     0
     0     1
     0     0

//uzima velicinu matrice u zagradi//

>> eye(size(A))

ans =

     1     0     0
     0     1     0
     0     0     1

>> ones(2,3)

ans =

     1     1     1
     1     1     1

>> zeros(2)

ans =

     0     0
     0     0

//digitalni signal npr//

>> G=[zeros(1,3),ones(1,2)]

G =

     0     0     0     1     1

//zbir svik vrsta, dijagonala i kolona je isti, uvek je kvadratna//

>> magic(3)

ans =

     8     1     6
     3     5     7
     4     9     2

>> magic(6)

ans =

    35     1     6    26    19    24
     3    32     7    21    23    25
    31     9     2    22    27    20
     8    28    33    17    10    15
    30     5    34    12    14    16
     4    36    29    13    18    11

//naci presek 4 vrste i 3,2 kolone//

>> clear all
>> A=magic(4)

A =

    16     2     3    13
     5    11    10     8
     9     7     6    12
     4    14    15     1

>> B=A(4,3:-1:2)

B =

    15    14

//dolazi na odbrani//

>> clear all
>> A=[sin(pi/2)^2,sqrt(4),log(exp(1)) ;abs(-3),tan(pi/4)^2,exp(-2);log(5),8^(1/3),exp(1)]

A =

    1.0000    2.0000    1.0000
    3.0000    1.0000    0.1353
    1.6094    2.0000    2.7183

>> A(2,3)

ans =

    0.1353

>> A(3,:)

ans =

    1.6094    2.0000    2.7183

>> A(1:2:3,2:3)

ans =

    2.0000    1.0000
    2.0000    2.7183

>> det(A)

ans =

   -9.0359

>> rank(A)

ans =

     3

>> A'

ans =

    1.0000    3.0000    1.6094
    2.0000    1.0000    2.0000
    1.0000    0.1353    2.7183

>> clear all
>> A=[2,0;1,3]

A =

     2     0
     1     3

>> B=[3,-1;7,2]

B =

     3    -1
     7     2

>> A+B

ans =

     5    -1
     8     5

>> A-B

ans =

    -1     1
    -6     1

>> 3*A

ans =

     6     0
     3     9

>> A*A

ans =

     4     0
     5     9


>> A^2+3*A-2*eye(2)

ans =

     8     0
     8    16
>> clear all
>> A=[3,5,1;2,7,4;1,3,0]

A =

     3     5     1
     2     7     4
     1     3     0

>> B=[2,7,1]

B =

     2     7     1

>> A*B'+eye(size(A*B'))

ans =

    43
    57
    23

//tacka se koristi za operacije sa pojedinacnim elementima (      .^2        ./         .*     )//

>> clear all
>> x=-2:2:6;
>> y=linspace(-3,9,5)

y =

    -3     0     3     6     9

>> x.^2

ans =

     4     0     4    16    36

>>
>> x

x =

    -2     0     2     4     6