I am trying to edit an old code to simplify it but I keep getting errors. Right now I am getting the script name error even though I have followed instructions fo rnaming

I get the error saying i can't have the same script name as the function but it worked before and I haven't changed the name

%% problem 1c - projectile Quadratic
function [root] = Quadratic(a, b, c, plusOrMinus)
% Quadratic - determine the root of the projectile using the quadratic equation
%   a, b, and c are the coefficients of the quadratic equation, plusOrMinus
%   is a multiplier (+1 or -1) that selects the + or - in the quadratic
%   formula. root is a single root of the quadratic equation that is
%   computed using the quadratic formula. 
% Erin Gibbs, u1556567, ME EN 1010, HW#2
root = (-b + plusOrMinus * (sqrt(b^2 - (4*a*c)))) / (2 * a);
end
%% test case 1 (positive plusOrMinus)
% equation: x^2 - x - 2 = 0
a = 1;
b = -1;
c = -2;
plusOrMinus = 1;
[root] = Quadratic(a, b, c, plusOrMinus)

Answer 1

[Star Strider]

Your code works here. I’m not quite sure what you’re doing.

You cannot have a script name with the same name as the function, however saving the function as ‘Quadratic.m’ should work.

%% problem 1c - projectile Quadratic
function [root] = Quadratic(a, b, c, plusOrMinus)
% Quadratic - determine the root of the projectile using the quadratic equation
%   a, b, and c are the coefficients of the quadratic equation, plusOrMinus
%   is a multiplier (+1 or -1) that selects the + or - in the quadratic
%   formula. root is a single root of the quadratic equation that is
%   computed using the quadratic formula. 
% Erin Gibbs, u1556567, ME EN 1010, HW#2
root = (-b + plusOrMinus * (sqrt(b^2 - (4*a*c)))) / (2 * a);
end

%% test case 1 (positive plusOrMinus)
% equation: x^2 - x - 2 = 0
a = 1;
b = -1;
c = -2;
plusOrMinus = 1;
[root] = Quadratic(a, b, c, plusOrMinus)

root = 2

.

[ERIN]

it is saved as Quadratic.m in a folder named Quadratic but I still get the error

[Star Strider]

I’m slightly lost at this point.

Only the function code itself:

function [root] = Quadratic(a, b, c, plusOrMinus)

% Quadratic - determine the root of the projectile using the quadratic equation

% a, b, and c are the coefficients of the quadratic equation, plusOrMinus

% is a multiplier (+1 or -1) that selects the + or - in the quadratic

% formula. root is a single root of the quadratic equation that is

% computed using the quadratic formula.

% Erin Gibbs, u1556567, ME EN 1010, HW#2

root = (-b + plusOrMinus * (sqrt(b^2 - (4*a*c)))) / (2 * a);

end

should be saved in ‘Quadratic.m’.

Then in your script (that is not named ‘Quadratic.m’ although it can be named ‘Erin_Gibbs_u1556567_ME_EN_1010_HW#2’ or something similar) call your funcittion as:

%% test case 1 (positive plusOrMinus)

% equation: x^2 - x - 2 = 0

a = 1;

b = -1;

c = -2;

plusOrMinus = 1;

[root] = Quadratic(a, b, c, plusOrMinus)

That should work.

.

[ERIN]

okay thank you

[Star Strider]

My pleasure!

If my Answer helped you solve your problem, please Accept it!

.