5*(5+6/(7-3))

ans =

   32.5000

x=4*(5+9)

x =

    56

who

Your variables are:

ans  x    

whos
  Name      Size            Bytes  Class     Attributes

  ans       1x1                 8  double              
  x         1x1                 8  double              

pi

ans =

    3.1416

sin(pi)

ans =

  1.2246e-016

eps

ans =

  2.2204e-016

cos(pi)

ans =

    -1

sin(pi/2)

ans =

     1

1/0

ans =

   Inf

0/0

ans =

   NaN

realmin

ans =

  2.2251e-308

realmax

ans =

  1.7977e+308

i

ans =

        0 + 1.0000i

j

ans =

        0 + 1.0000i

sqrt(-1)

ans =

        0 + 1.0000i

a=[1,2,3,4]

a =

     1     2     3     4

whos
  Name      Size            Bytes  Class     Attributes

  a         1x4                32  double              
  ans       1x1                16  double    complex   
  x         1x1                 8  double              

A=[1,2,3;5,6,7]

A =

     1     2     3
     5     6     7

b=[1;4]

b =

     1
     4

C=[A,b]

C =

     1     2     3     1
     5     6     7     4

D=[C;a]

D =

     1     2     3     1
     5     6     7     4
     1     2     3     4

F=[1+i, 2-3i; 7+12i,4-5i]

F =

   1.0000 + 1.0000i   2.0000 - 3.0000i
   7.0000 +12.0000i   4.0000 - 5.0000i

g=[9,5.7]

g =

    9.0000    5.7000

H=[F;g]

H =

   1.0000 + 1.0000i   2.0000 - 3.0000i
   7.0000 +12.0000i   4.0000 - 5.0000i
   9.0000             5.7000          

R1=10

R1 =

    10

R2=4

R2 =

     4

R3=1

R3 =

     1

R=R1+R2+R3

R =

    15

Odpory=[10,4,1]

Odpory =

    10     4     1

sum(Odpory)

ans =

    15

diary off