43,706 views
21 votes
21 votes
In matlab how would this specific code be written and how could I ask the user to enter a vector of coefficients for the polynomial model. Verify that the entry has an even number of elements (an odd number of elements would mean an even order polynomial). If an invalid vector is entered, prompt the user to re-enter the vector until an acceptable vector is entered. If the user does not enter an acceptable vector after 5 attempts (including the first prompt), display a warning and remove the last element of the last vector entered. (For example, if the last user input is [1 2 3 4 5], the vector becomes [1 2 3 4]).

my code
[1,2,3,4];

User MattSayar
by
2.3k points

2 Answers

20 votes
20 votes

Final answer:

To write the specific code in MATLAB, ask the user to enter a vector of coefficients for the polynomial model, verify that the entry has an even number of elements, and prompt the user to re-enter if an invalid vector is entered.

Step-by-step explanation:

In MATLAB, you can write the code to ask the user to enter a vector of coefficients for the polynomial model as follows:

coefficients = input('Enter the vector of coefficients: ')

To verify that the entry has an even number of elements, you can use the mod function:

if mod(length(coefficients), 2) ~= 0

For the validation and re-entering logic, you can use a while loop:

valid = false;

attempts = 0;

while ~valid && attempts <= 5

if mod(length(coefficients), 2) ~= 0

coefficients = input('Enter a valid vector of coefficients: ')

attempts = attempts + 1;

else

valid = true;

end

end

If the user does not enter an acceptable vector after 5 attempts, you can display a warning and remove the last element using:

if attempts > 5

warning('No valid vector entered after 5 attempts. Removing the last element.')

coefficients(end) = [];

User Tharwen
by
3.1k points
29 votes
29 votes

Answer:

Step-by-step explanation:

that is correct 1234

User Lexy
by
2.5k points