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    Research and commercial use is prohibited.

>> A=[1 3;5 9]

A =

     1     3
     5     9

>> B=[4 -7;10 0]

B =

     4    -7
    10     0

>> x=1; M=[3*x, 1-2*x;x, x*x-1]

M =

     3    -1
     1     0

>> A+B

ans =

     5    -4
    15     9

>> A-B

ans =

    -3    10
    -5     9

>> A*B

ans =

    34    -7
   110   -35

>> A'

ans =

     1     5
     3     9

>> A=[1 2 3;2 3 1; 3 1 2];
>> inv(A)

ans =

   -0.2778    0.0556    0.3889
    0.0556    0.3889   -0.2778
    0.3889   -0.2778    0.0556

>> B=[2;4;6;8]

B =

     2
     4
     6
     8

>> inv(B)
Error using inv
Matrix must be square.

>> A

A =

     1     2     3
     2     3     1
     3     1     2

>> det(A)

ans =

   -18

>> Z1=5+i

Z1 =

   5.0000 + 1.0000i

>> abs(Z1)

ans =

    5.0990

>> Z2=6.5+2i

Z2 =

   6.5000 + 2.0000i

>> angle(Z1)

ans =

    0.1974

>> angle(Z2)

ans =

    0.2985

>> real(Z1)

ans =

     5

>> real(Z2)

ans =

    6.5000

>> imag(Z1)

ans =

     1

>> Z3=[3+2i,-i,-1-2i}
 Z3=[3+2i,-i,-1-2i}
                  ↑
Error: Unbalanced or unexpected parenthesis or bracket.

Did you mean:
>> Z3=[3+2i,-i,-1-2i]

Z3 =

   3.0000 + 2.0000i   0.0000 - 1.0000i  -1.0000 - 2.0000i

>> Z3'

ans =

   3.0000 - 2.0000i
   0.0000 + 1.0000i
  -1.0000 + 2.0000i

>> A=[4 2*PI;6i 10sqrt(2)+i]
 A=[4 2*PI;6i 10sqrt(2)+i]
                ↑
Error: Unexpected MATLAB expression.

Did you mean:
>> A = [4 2*PI;6i 10*sqrt(2) + i]
Undefined function or variable 'PI'.

Did you mean:
>> A = [4 2*pi;6i 10*sqrt(2) + i]A
 A = [4 2*pi;6i 10*sqrt(2) + i]A
                               ↑
Error: Unexpected MATLAB expression.

>> A

A =

     1     2     3
     2     3     1
     3     1     2

>> A = [4 2*pi;6i 10*sqrt(2) + i]

A =

   4.0000 + 0.0000i   6.2832 + 0.0000i
   0.0000 + 6.0000i  14.1421 + 1.0000i

>> B=[6i -13*PI;PI 16]
Undefined function or variable 'PI'.

Did you mean:
>> B=[6i -13*pi;pi 16]

B =

   0.0000 + 6.0000i -40.8407 + 0.0000i
   3.1416 + 0.0000i  16.0000 + 0.0000i

>> A*B

ans =

   1.0e+02 *

   0.1974 + 0.2400i  -0.6283 + 0.0000i
   0.0843 + 0.0314i   2.2627 - 2.2904i

>> B*A

ans =

   1.0e+02 *

   0.0000 - 2.2104i  -5.7757 - 0.0314i
   0.1257 + 0.9600i   2.4601 + 0.1600i

>> x=[1 2 3]; y=[0 1 0];
>> 2*x

ans =

     2     4     6

>> x. *y
 x. *y
    ↑
Error: Unexpected MATLAB operator.

>> x.*y

ans =

     0     2     0

>> x*y
Error using  *
Inner matrix dimensions must agree.

>> A=eye(3)

A =

     1     0     0
     0     1     0
     0     0     1

>> B=ones(2,4)

B =

     1     1     1     1
     1     1     1     1

>> C=zeros(3,4)

C =

     0     0     0     0
     0     0     0     0
     0     0     0     0

>> D=rand(2,3)

D =

    0.8147    0.1270    0.6324
    0.9058    0.9134    0.0975

>> E=randn(2,3)

E =

   -0.4336    3.5784   -1.3499
    0.3426    2.7694    3.0349

>> A=[5 4 3 2;0 9 8 7;1 2 3 4;7 6 5 4]

A =

     5     4     3     2
     0     9     8     7
     1     2     3     4
     7     6     5     4

>> F=diag(A)

F =

     5
     9
     3
     4

>> G=diag(A,2)

G =

     3
     7

>> H=rot90(A)

H =

     2     7     4     4
     3     8     3     5
     4     9     2     6
     5     0     1     7

>> repmat(A,n,m)
Undefined function or variable 'n'.

>> repmat(A,2,3)

ans =

     5     4     3     2     5     4     3     2     5     4     3     2
     0     9     8     7     0     9     8     7     0     9     8     7
     1     2     3     4     1     2     3     4     1     2     3     4
     7     6     5     4     7     6     5     4     7     6     5     4
     5     4     3     2     5     4     3     2     5     4     3     2
     0     9     8     7     0     9     8     7     0     9     8     7
     1     2     3     4     1     2     3     4     1     2     3     4
     7     6     5     4     7     6     5     4     7     6     5     4

>> A(:,:)

ans =

     5     4     3     2
     0     9     8     7
     1     2     3     4
     7     6     5     4

>> A(3,4)

ans =

     4

>> A(2,:)

ans =

     0     9     8     7

>> A(:,2)

ans =

     4
     9
     2
     6

>> A(:,4)

ans =

     2
     7
     4
     4

>> A(3,2:4)

ans =

     2     3     4

>> A(2:3,2:4)

ans =

     9     8     7
     2     3     4

>> A(4,3)=0

A =

     5     4     3     2
     0     9     8     7
     1     2     3     4
     7     6     0     4

>> Q=[6 8; 9 12]

Q =

     6     8
     9    12

>> Q1=[Q;w]
Undefined function or variable 'w'.

>> w=[3 4]

w =

     3     4

>> Q1=[Q;w]

Q1 =

     6     8
     9    12
     3     4

>> Q1=vertcat(q,w)
Undefined function or variable 'q'.

Did you mean:
>> Q1=vertcat(Q,w)

Q1 =

     6     8
     9    12
     3     4

>> k=[5;6]

k =

     5
     6

>> Q2=[Q k]

Q2 =

     6     8     5
     9    12     6

>> Q2=horzcat(Q,k)

Q2 =

     6     8     5
     9    12     6

>> w=[2 3 2 3 2 3 2 3 2 3];
>> N=ones(3,4)

N =

     1     1     1     1
     1     1     1     1
     1     1     1     1

>> numel(w)

ans =

    10

>> numel(N)

ans =

    12

>> lenght(w)
Undefined function or variable 'lenght'.

Did you mean:
>> length(w)

ans =

    10

>> length(N)

ans =

     4

>> w1=0:0.25:2

w1 =

         0    0.2500    0.5000    0.7500    1.0000    1.2500    1.5000    1.7500    2.0000

>> length(w1)

ans =

     9

>> w2=0:(1-0)/(11-1):1

w2 =

         0    0.1000    0.2000    0.3000    0.4000    0.5000    0.6000    0.7000    0.8000    0.9000    1.0000

>> w2=linspace(0,1,10)

w2 =

         0    0.1111    0.2222    0.3333    0.4444    0.5556    0.6667    0.7778    0.8889    1.0000

>> w2=linspace(0,1,11)

w2 =

         0    0.1000    0.2000    0.3000    0.4000    0.5000    0.6000    0.7000    0.8000    0.9000    1.0000

>> w3=linspace(0,300,7)

w3 =

     0    50   100   150   200   250   300

>> w3=0:50:300

w3 =

     0    50   100   150   200   250   300

>>
>> w4=longspace(0,5,6)
Undefined function or variable 'longspace'.

Did you mean:
>> w4=logspace(0,5,6)

w4 =

           1          10         100        1000       10000      100000

>>