# ENGR 328 Computational Methods in Engineering HW

*label*Science

*timer*Asked: Feb 23rd, 2019

*account_balance_wallet*$30

### Question Description

hi

how are you

homework by MATLAB CODE

if you need anything just text me

thanks

## Tutor Answer

Hi, here is your assignment :) Together with the m files :)

ENGR 328 Homework 5

1. A number of matrices are defined as:

%

%

%

%

%

Answer the following questions regarding these matrices:

(a) What are the dimensions of the matrices?

(b) Identify the square matrices, column vectors, and row vectors.

(c) What are the values of the elements: a12, b23, d32, e22, f12, g12?

(d) Perform the following operations:

A. Code:

(a) What are the dimensions of the matrices?

A = [4 7; 1 2; 5 6]

[m,n] = size(A)

Output:

B. Code:

%B. Identify the square matrices, column vectors, and row

vectors.

%

Square matrix are those with equal number of rows and

columns

%

Below is code for checking square matrix A = [4 7; 1 2; 5 6]

[m,n] = size(A)

if m == n

disp('A is square matrix');

else

disp('A is not a square matrix');

end

B = [4 3 7; 1 2 7; 2 0 4]

[m,n] = size(B)

if m==n

disp('B is square matrix');

else

disp('B is not square matrix');

end

Output:

C. Code:

% c) What are the values of the elements: a12, b23, d32, e22,

f12, g12?

A = [4 7; 1 2; 5 6]

[m,n] = size(A)

A(1,2)

B=[4 3 7;1 2 7;2 0 4]

B(2,3)

D=[9 4 3 -6;2 -1 7 5]

D(3,2)

Output:

D. Code:

Output:

B=

4

3

7

1

2

7

2

0

4

9

4

3

-6

2

-1

7

5

1

5

8

7

2

3

4

0

6

C=

3

6

1

D=

E=

ans =

5

8 15

8

...

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