Get familiar with MATLAB command window Learn to define and work with vectors an

Question

Get familiar with MATLAB command window Learn to define and work with vectors and matrices in MATLAB In MATLAB command window type in the commands for the following items: Define the row vector A = [9 - 7] Access the 2nd element from vector A Define the row vector B = [-50 -48 -46 -0]. Note that B is a vector which contains 26 elements. Define vector C with 10 linearly spaced elements between 0 and 10 Define the matrix: D = [-9 0 7 pi 3 squareroot 5 9 4 -8 8 0] Access element '7 pi' in matrix D Access the 3rd column of matrix D Please record the MATLAB commands and results in your Activity Report for this unit.

Explanation / Answer

>> A=[9 -7]

A =

     9    -7

>> A(1,2)

ans =

    -7

>> B=-50:2:0

B =

Columns 1 through 15

   -50   -48   -46   -44   -42   -40   -38   -36   -34   -32   -30   -28   -26   -24   -22

Columns 16 through 26

   -20   -18   -16   -14   -12   -10    -8    -6    -4    -2     0

>> C=0:1:10

C =

     0     1     2     3     4     5     6     7     8     9    10

>> D=[-9 0 -7*pi; 3*sqrt(5) 9 4; -8 8 0]

D =

   -9.0000         0 -21.9911
    6.7082    9.0000    4.0000
   -8.0000    8.0000         0

>> D(1,3)

ans =

-21.9911

>> D(3,1:3)

ans =

    -8     8     0

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