Need Help 3. Use a for loop to sum the elements in the following vector: V [10,

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Need Help

3. Use a for loop to sum the elements in the following vector: V [10, 27, -66, 43, 72, 87, 56, 98, 33, 23.5, 8.5, 77.7, 36, 24, 11, 85, 55, 63, 4, 39, 100,-96, 4, 41, 189, -9, 78.3, -83] You will need to first determine the size of the vector Check your answer using the sum function 4. Repeat the previous problem, this time using a while loop 5. Create a function called "isInt" to check whether an input number is an integer. The function should display a sentence of the form: "22.5 is not an integer!" or "99 is an integer!" if the inputs were respectively 22.5 and 99 In each of the following questions (6. & 7.), first, evaluate the given MATLAB code for each of the test cases without using MATLAB. Then, using MATLAB, check the answers you obtained first. 6. ifn> 1 m = n+1 b. n=2 c.n=10 m- m- m- elseif n==0 m=n else m = n-10 end a. letter = 'p' b. lettery c. letter = 'g' d. letter 'Q' e. letter- x 7. Switch letter case 'x' case 'y', 'Y' case 'Q otherwise disp ( 'Hello, ) disp ( 'Yes') disp ( 'Quit' ) disp ('Error') end Note: When you copy and paste codes into MATLAB, some characters may not correctly translate. As a result, you may have to correct them for the script to run properly.

Explanation / Answer

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Since there are multiple questions, I have answered the first two (in the same matlab file):

**** Matlab Code ******

%%%%%%%%%%%%%%%%%%%%%%%%%%
%% Sum of elements in array using for loop and while loop

V = [10 27 -66 43 72 87 56 98 33 23.5 8.5 77.7 36 24 11 85 55 63 4 39 100 -96 4 41 189 -9 78.3 -83];
sum_V = 0;

for i=1:size(V,2)                                                       % for loop
    sum_V = sum_V + V(i);
end

fprintf('The sum with for loop is %f ',sum_V);                         % printing results
fprintf('The sum using the MATLAB sum option is is %f ',sum(V));       % validating with sum function

sum_V = 0;
i=1;
while(i<=size(V,2))                                                     % while loop
    sum_V = sum_V + V(i);
    i=i+1;
end

fprintf('The sum with while loop is %f ',sum_V);

**** End of Code ******

Output:

The sum with for loop is 1011.000000
The sum using the MATLAB sum option is is 1011.000000
The sum with while loop is 1011.000000

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