MATLAB function that takes a matrix as argument and then ask from the user

MATLAB function that takes a matrix as argument and then ask from the user

Posted in matlab

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By Anonymous

MATLAB function that takes a matrix as argument and then ask from the user that which operation you want to perform i.e. (+, -, *) then show the result. For example, if user asks to perform addition then program should show sum of all the values of that matrix. MATRIX CAN BE OF ANY DIMENSION.

function Question10()

    Rows = input('Enter Rows for Matrix A: ');                    %getting no. of rows from user

    Columns = input('Enter Columns for Matrix B: ');                    %getting no. of columns from user

   

    Matrix = zeros(Rows, Columns);                         %initializing matrix

   

    for i=1 : Rows                                             %for loop

        for j=1 : Columns

            fprintf('Enter Value in Row %d Column %d = ', i, j);

            Matrix(i, j) = input('');

        End                     %ending loop

    End                         %ending

   

    disp(' ');

    disp('+');

    disp('-');                  %displayig options

    disp('*');

    disp('/');

    option = input('\nWhich Operation Do you want to Perform: ', 's');     %displayig options

   

    Result = Operations(Matrix, option);

    disp(Result);                      %displayig result

end

MATLAB program which computes the mean and standard deviation of the data. Use FOR LOOPs.

MATLAB program which computes the mean and standard deviation of the data. Use FOR LOOPs.

Posted in matlab

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By Anonymous

We can generate a set of data with a random values about some

mean value with the command

num=100;

spr=0.1;

data=5.0+spr*sign(1.0-2.0*rand(1,num)).*rand(1,num)

a) What is the last line doing?

b) Write a MATLAB program which computes the mean and standard deviation of the data. Use FOR LOOPs.

Solution:

function Question9()

    num = 100;

    spr = 0.1;

    data = 5.0 + spr * sign(1.0 - 2.0 * rand(1,num)) .* rand(1,num);         %according to as per given

   

    Total=0;

    Size = size(data);

    for i=1 : Size(2)

        Total = Total + data(i);

    end

   

    Mean = Total/num;                      %getting mean

   

    Sum = 0;

    for i=1 : Size(2)

        Sum = Sum + ((data(i) - Mean) ^ 2);

    end

   

    SD = sqrt(Sum / (num-1));

   

    fprintf('Mean of Data: %.2f \n', Total/num);

    fprintf('SD of data %.2f \n', SD);                           %printig output

end