27+48

ans =

    75

27-48

ans =

   -21

27*48

ans =

        1296

sqrt(16)

ans =

     4

27/48

ans =

    0.5625

16.5*(38.5+71/40)

ans =

  664.5375

2^5

ans =

    32

5*3^2

ans =

    45

(5*3)^2

ans =

   225

5*(3^2)

ans =

    45

x=7

x =

     7

y=9

y =

     9

x+y

ans =

    16

xy
{Undefined function or variable 'xy'.
} 
x*y

ans =

    63

x/y

ans =

    0.7778

x^2

ans =

    49

x=25

x =

    25

y=40

y =

    40

x+y

ans =

    65

x*y

ans =

        1000

x/y

ans =

    0.6250

(8*x)/5

ans =

    40

6*x+9*y

ans =

   510

4+5

ans =

     9

ans+10

ans =

    19

ans+100

ans =

   119

x=1, y=3, 3*x+7*y, 9*y, (5*y)/(2*x+y)
x =

     1


y =

     3


ans =

    24


ans =

    27


ans =

     3

who

Your variables are:

ans  x    y    

dog=3

dog =

     3

DOG=7

DOG =

     7

who

Your variables are:

DOG  ans  dog  x    y    

clear dog
who

Your variables are:

DOG  ans  x    y    

clear
who
pi

ans =

    3.1416

5+pi

ans =

    8.1416

5*pi

ans =

   15.7080

sqrt(25)

ans =

     5

sqrt(24)

ans =

    4.8990

sqrt(-9)

ans =

   0.0000 + 3.0000i

exp(1)

ans =

    2.7183

exp(5)

ans =

  148.4132

sinh(3)

ans =

   10.0179

cosh(5)

ans =

   74.2099

sinh(sqrt(5))

ans =

    4.6248

tan(sqrt(5))

ans =

   -1.2746

cos(pi)

ans =

    -1

sin(pi/3)

ans =

    0.8660

x=sin(1), y=cos(2)

x =

    0.8415


y =

   -0.4161

x+y, x*y

ans =

    0.4253


ans =

   -0.3502

log(8),log(100(,asin(.5)+log(5)
 log(8),log(100(,asin(.5)+log(5)
               ↑
{Error: Invalid expression. When calling a
function or indexing a variable, use parentheses.
Otherwise, check for mismatched delimiters.
} 
log(8),log(100),asin(.5)+log(5)

ans =

    2.0794


ans =

    4.6052


ans =

    2.1330

w=5-8i, z=3+4i

w =

   5.0000 - 8.0000i


z =

   3.0000 + 4.0000i

4z+w,z/w
 4z+w,z/w
  ↑
{Error: Invalid expression. Check for missing
multiplication operator, missing or unbalanced
delimiters, or other syntax error. To construct
matrices, use brackets instead of parentheses.
} 
4*z+w,z/w

ans =

  17.0000 + 8.0000i


ans =

  -0.1910 + 0.4944i

pi

ans =

    3.1416

format long
pi

ans =

   3.141592653589793

format short
pi

ans =

    3.1416

6/14

ans =

    0.4286

format rational
6/14

ans =

       3/7     

format short
2^20

ans =

     1048576

2^20;
[4 3 7 8 10 13]

ans =

     4     3     7     8    10    13

[4; 3; 7; 8; 10; 13]

ans =

     4
     3
     7
     8
    10
    13

[4 3 7; 8 10 13]

ans =

     4     3     7
     8    10    13

[4 3; 7 8; 10 13]

ans =

     4     3
     7     8
    10    13

x=[3 12 7], y=[-2 4 9]

x =

     3    12     7


y =

    -2     4     9

x+y,3*x

ans =

     1    16    16


ans =

     9    36    21

clear
a=(3,5,7,9)
 a=(3,5,7,9)
     ↑
{Error: Invalid expression. When calling a
function or indexing a variable, use parentheses.
Otherwise, check for mismatched delimiters.
} 
a=(3 5 7 9)
 a=(3 5 7 9)
      ↑
{Error: Invalid expression. Check for missing
multiplication operator, missing or unbalanced
delimiters, or other syntax error. To construct
matrices, use brackets instead of parentheses.
} 
a=[3 5 7 9]

a =

     3     5     7     9

b=[8,-2,4,11]

b =

     8    -2     4    11

a-5*b

ans =

   -37    15   -13   -46

dot(a,b)

ans =

   141

x=[4 3 2 9], y=[7 5 11 6]

x =

     4     3     2     9


y =

     7     5    11     6

x.*y

ans =

    28    15    22    54

x.^2

ans =

    16     9     4    81

diary off