1/0
ans =
   Inf



clear
0/0
ans =
   NaN
h=1.0546e-34
h =
   1.0546e-34


h^10
ans =
     0
disp('Underflow')
Underflow
h^(-10)
ans =
   Inf
% overflow


1/h^10
ans =
   Inf
(1/3)+(1/3)+(1/3)-1
ans =
     0
(1/3)+(1/3)+(1/3)+(1/3)+(1/3)+(1/3)-2
ans =
  -2.2204e-16


(1000/3)+(1000/3)+(1000/3)+(1000/3)+(1000/3)+(1000/3)-2000
ans =
  -2.2737e-13
eps(1)
ans =
   2.2204e-16
eps(1000)
ans =
   1.1369e-13
sin(10*pi)
ans =
  -1.2246e-15
sin(10000000000000000*pi)
ans =
   -0.3752
cos1=cos(10*pi)
cos1 =
     1
cos1-1
ans =
     0
cos1=cos(10000000000000000*pi)
cos1 =
    0.9269
cos1=cos(100000000000000000*pi)
cos1 =
   -0.5300
error=cos1-1
error =
   -1.5300
% Precedence
% ^
% * /
% + -
2+3/4
ans =
    2.7500




2+(3/4)
ans =
    2.7500

(2+3)/4
ans =
    1.2500
12/2*3
ans =
    18
12/(2*3)
ans =
     2

(12/2)*3
ans =
    18
clear
x=1
x =
     1
y=2
y =
     2
x=y; y=x;
x=1
x =
     1
x=y
x =
     2
x=1
x =
     1
xSaved=x
xSaved =
     1
y=x
y =
     1
clear
x=1
x =
     1
y=2
y =
     2
xSaved=x
xSaved =
     1
x=y
x =
     2
y=xSaved
y =
     1
pi
ans =
    3.1416
pi=3.2
pi =
    3.2000
pi*1^2
ans =
    3.2000
clear pi
pi
ans =
    3.1416
sqr(3)
ans =
     9
sqrTry
start of sqrTry
ans =
     9
y =
     4
y2 =
    16
sqrTry
start of sqrTry
<a href="matlab: opentoline('\\print2\dommelen\My Documents\MATLAB\sqrTry.m',3,1)">3   </a>sqr(3)
if system_dependent('IsDebugMode')==1, dbquit; end
clear
sqrTry
start of sqrTry
<a href="matlab: opentoline('\\print2\dommelen\My Documents\MATLAB\sqrTry.m',2,1)">2   </a>sqr(3)
if system_dependent('IsDebugMode')==1, dbstep in; end
if system_dependent('IsDebugMode')==1, dbstep; end
if system_dependent('IsDebugMode')==1, dbstep; end
if system_dependent('IsDebugMode')==1, dbstep; end
if system_dependent('IsDebugMode')==1, dbstep; end
ans =
     9
if system_dependent('IsDebugMode')==1, dbstep; end
y =
     4
if system_dependent('IsDebugMode')==1, dbstep in; end
if system_dependent('IsDebugMode')==1, dbstep; end
if system_dependent('IsDebugMode')==1, dbstep; end
if system_dependent('IsDebugMode')==1, dbstep; end
if system_dependent('IsDebugMode')==1, dbstep; end
y2 =
    16
if system_dependent('IsDebugMode')==1, dbquit; end
%% ARRAYS

list=[1 2 4 9 16]
list =
     1     2     4     9    16
who list

Your variables are:

list  

whos list
  Name      Size            Bytes  Class     Attributes

  list      1x5                40  double              

list
list =
     1     2     4     9    16
sqrt(list)
ans =
    1.0000    1.4142    2.0000    3.0000    4.0000



list=[0 30 45 60 90]
list =
     0    30    45    60    90
sind(list)
ans =
         0    0.5000    0.7071    0.8660    1.0000
cosd(list)
ans =
    1.0000    0.8660    0.7071    0.5000         0
tand(list)
ans =
         0    0.5774    1.0000    1.7321       Inf
list
list =
     0    30    45    60    90
% make a column
list'
ans =
     0
    30
    45
    60
    90
list2=[0; 30; 45; 60; 90]
list2 =
     0
    30
    45
    60
    90
list2'
ans =
     0    30    45    60    90
list''
ans =
     0    30    45    60    90
list=[1 2 3 4 5 6 7 8 9 10]
list =
  Columns 1 through 8
     1     2     3     4     5     6     7     8
  Columns 9 through 10
     9    10
% [START:END]
list=[1:10]
list =
  Columns 1 through 8
     1     2     3     4     5     6     7     8
  Columns 9 through 10
     9    10
% [START:STEP:END]
list=[1:1:10]
list =
  Columns 1 through 8
     1     2     3     4     5     6     7     8
  Columns 9 through 10
     9    10
list=[-2:2:12]
list =
    -2     0     2     4     6     8    10    12
[1 2 3 4 5]
ans =
     1     2     3     4     5

set=[1 2 3 4 5]
set =
     1     2     3     4     5
count=[1 2 3 4 5]
count =
     1     2     3     4     5
sqrt(count)
ans =
    1.0000    1.4142    1.7321    2.0000    2.2361
sqr(count)
{Error using <a href="matlab:matlab.internal.language.introspective.errorDocCallback('mtimes')" style="font-weight:bold"> * </a>
Inner matrix dimensions must agree.
Error in <a href="matlab:matlab.internal.language.introspective.errorDocCallback('sqr', '\\print2\dommelen\My Documents\MATLAB\sqr.m', 3)" style="font-weight:bold">sqr</a> (<a href="matlab: opentoline('\\print2\dommelen\My Documents\MATLAB\sqr.m',3,0)">line 3</a>)
x2=x*x;} 
sqr(3)
ans =
     9
sqr(count)
ans =
     1     4     9    16    25
count=[1 2 3 4 5]
count =
     1     2     3     4     5
sqr(count)
ans =
     1     4     9    16    25
sqrDot(count)
{Error using <a href="matlab:matlab.internal.language.introspective.errorDocCallback('mtimes')" style="font-weight:bold"> * </a>
Inner matrix dimensions must agree.
Error in <a href="matlab:matlab.internal.language.introspective.errorDocCallback('sqrDot', '\\print2\dommelen\My Documents\MATLAB\sqrDot.m', 3)" style="font-weight:bold">sqrDot</a> (<a href="matlab: opentoline('\\print2\dommelen\My Documents\MATLAB\sqrDot.m',3,0)">line 3</a>)
x2=x*x;} 
sqrDot(count)
ans =
     1     2     3     4     5
     2     4     6     8    10
     3     6     9    12    15
     4     8    12    16    20
     5    10    15    20    25
sqrDot(count')
ans =
    55
sqrDot(count)
ans =
     1     2     3     4     5
     2     4     6     8    10
     3     6     9    12    15
     4     8    12    16    20
     5    10    15    20    25
mod(5,3)
ans =
     2
5%3
ans =
     5