I am trying to give an option (in row 15) of making sure you selected the right option. so, I wrote disp('if that correct type (1) if is not correct type(2) and it seem is not working. please help.

disp('0. Graphical')

disp('1. Incremental Search')

disp('2. Bisection Method')

disp('3. False Position Method')

disp('4. Fixed Point Iteration')

disp('5. Newton Raphson')

disp('6. Secant')

disp('7. Modified Secant')

disp('__________________________________')

disp(' ')

meth = input('Select Method (0 through 7):');

switch meth

case 0

disp(' ')

disp('You been Have Selected Graphical Method')

disp('if that Correct type (1) if is not correct type (2)')

func = input('Primary Function (@(x)):');

if isempty(func)

error('Must Enter a Function. Start again.'),

end

xL = input('Lower Interval Limit: ');

if isempty(xL)

error('Must Enter a Lower Limit. Start again. ');

end

xU = input('Upper Interval Limit: ');

if isempty(xU)

error('Must Enter an Upper limit. Start again.'),

end

bounds = [xL xU];

fplot(func, bounds);

[Hamad Abdin]

Thank you so much..... That was so helpful...... and sorry for late respond.... thank you again

Answer 1

[Rishabh Mishra]

Hi,

Use the code below to work out the issue you are facing.

disp('0. Graphical') 
disp('1. Incremental Search') 
disp('2. Bisection Method') 
disp('3. False Position Method') 
disp('4. Fixed Point Iteration') 
disp('5. Newton Raphson') 
disp('6. Secant') 
disp('7. Modified Secant') 
disp('__________________________________') 
disp(' ') 
meth = input('Select Method (0 through 7):'); 
switch meth  
    case 0 
        disp(' ') 
        disp('You been Have Selected Graphical Method') 
        isCorrect = 2; 
        while(isCorrect == 2) 
            isCorrect = input('if that Correct type (1) if is not correct type (2)'); 
        end 
        func = input('Primary Function (@(x)):'); 
        if isempty(func) 
            error('Must Enter a Function. Start again.'), 
        end 
            xL = input('Lower Interval Limit: '); 
            if isempty(xL) 
                error('Must Enter a Lower Limit. Start again. '); 
            end  
            xU = input('Upper Interval Limit: '); 
            if isempty(xU) 
                error('Must Enter an Upper limit. Start again.'), 
            end 
            bounds = [xL xU]; 
            fplot(func, bounds); 
end 

Hope this helps.