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ANEK [815]
3 years ago
5

(14 points) Consider the Matrix, M = 16 2 3 13 5 11 10 8 9 7 6 12 4 14 15 1 . Using the index operations write MATLAB statements

to retrieve the following. (a) The value in the first row and second column(ie. 2) (b) The value in the third row and third column (ie. 6) (c) All the elements in the first row (d) All the elements in the second column (e) All the elements in the first 2 rows (row 1 & 2) (f) All the elements in the last 2 columns (columns 3 & 4) (g) The elements 3 13 10 8
Computers and Technology
1 answer:
Sonja [21]3 years ago
8 0

Answer:

The Matlab commands for the given index operations and corresponding outputs are given below.

Explanation:

clc   % is used to clear the command window of the Matlab

clear all   % is used to clear the variables stored in Matlab workspace

% We are given a 4x4 matrix

Matlab command:

M = [16 2 3 13; 5 11 10 8; 9 7 6 12; 4 14 15 1]

output:

M =

   16     2     3    13

    5    11    10     8

    9     7     6    12

    4    14    15     1

(a) The value in the first row and second column (ie. 2)

Matlab command:

a = M(1,2)

% where a = Matrix(row_1,column_2)

output:

a =

    2

(b) The value in the third row and third column (ie. 6)

Matlab command:

b = M(3,3)

% where b = Matrix(row_3,column_3)

output:

b =

     6  

(c) All the elements in the first row

Matlab command:

c = M(1,:)

% where c = Matrix(row_1,:)

output:

c =

   16     2     3    13

(d) All the elements in the second column

Matlab command:

d = M(:,2)

% where d = Matrix(:,column_2)

output:

d =

    2

   11

    7

   14

(e) All the elements in the first 2 rows (row 1 & 2)

Matlab command:

e = M([1,2],:)

% where e = Matrix([row_1,row_2],:)

output:

e =

   16     2     3    13

    5    11    10     8  

(f) All the elements in the last 2 columns (columns 3 & 4)

Matlab command:

f = M(:,[3,4])

% where f= Matrix(:,[column_3,column_4])

output:

f =  

    3    13

   10     8

    6    12

   15     1

(g) The elements 3 13 10 8

Matlab command:

g = [M(1,3) M(1,4); M(2,3) M(2,4)]

% where g = Matrix(row_1,column_3) M(row_1,column_4); M(row_2,column_3), M(row_2,column_4)

output:

g =

    3    13

   10     8

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