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mina [271]
3 years ago
8

Write a function M-file that takes as input two matrices A and B, and as output produces

Computers and Technology
1 answer:
s344n2d4d5 [400]3 years ago
4 0

Answer:

Explanation:

The Matlab Function rowproduct.m

function C = rowproduct( A,B) % The function rowproduct.m

M = size(A); % Getting the dimension of matrix A

N = size(B); % Getting the dimension of matrix B

if(M(2)~=N(1)) % Checking the dimension

fprintf('Error in matrix dimension\n'); % print error if dimension mismatch

return; % And end the further execution of function

end % End of if condition

C = []; % initilizing the result matrix C

for k = 1:M(1) % Loop to perform the row product

C = [C;A(k,:)*B];% Computing row product and updating matrix C

end % End of loop

end % End of function

Testing the function rowproduct.m

The 2x3, 3x2 Matrix:

>> A = [ 1 2 3; 1 2 3];

>> B = [1 2; 1 2; 1 2];

>> C = rowproduct(A,B)

C =

6 12

6 12

>> A*B

ans =

6 12

6 12

The 3x4, 4x2 matrix:

>> A = [ 1 2 3 4; 1 2 3 4; 1 2 3 4];

>> B = [1 2; 1 2; 1 2; 1 2];

>> C = rowproduct(A,B)

C =

10 20

10 20

10 20

>> A*B

ans =

10 20

10 20

10 20

The 3x4 and 2x4 matrix:

>> A = [ 1 2 3 4; 1 2 3 4; 1 2 3 4];

>> B = [1 2 1 2; 1 2 1 2];

>> rowproduct(A,B)

Error in matrix dimension

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Find the equation of a line which has 10 points the following two coordinates: (4, 0) and (3, 4)​
alex41 [277]

Answer:

The equation of the line is y = -4·x + 16

10 points on the line include;

(0, 16), (1, 12), (2, 8), (3, 4), (4, 0), (5, -4), (6, -8), (7, 12), (8, -16), (9, -20), and (10, -24)

Explanation:

The given points through which the line passes are;

(4, 0) and (3, 4)

The slope, 'm', of the line is given as follows;

Slope, \, m =\dfrac{y_{2}-y_{1}}{x_{2}-x_{1}}

Therefore, the slope of the line is (4 - 0)/(3 - 4) = -4

In point and slope form we can get;

\dfrac{y-0}{x-4} = -4

The equation of the line in point and slope form is therefore;

y = -4·(x - 4) = -4·x + 16

The equation of the line in slope and intercept form is

y = -4·x + 16

10 points on the line are obtained using the equation of the line and the desired x-values input into cells on MS Excel and presented here as follows;

(0, 16), (1, 12), (2, 8), (3, 4), (4, 0), (5, -4), (6, -8), (7, 12), (8, -16), (9, -20), and (10, -24)

8 0
2 years ago
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