Undefined function or variable 'x'. help

Hi, I'm very new to matlab and i'm trying to write a function that outputs x and y when you input a, b and c (polynomial) and i get Undefined function or variable 'x' when i try to run it.

This is my function currently

function [a,b,c] = Polynomial(x,y)

a=input(a);b=input(b);c=input(c);

g=[a b c];

x=[1:0.01:2];

y=polyval(g,x);

plot(x,y)

end

[Walter Roberson]

How are you invoking the function?

Why are you accepting x and y as inputs, but then assigning new values to them?

[George Connett]

I didn't mean to accept them as inputs, thought having them after the function name i.e. Polynomial(x,y) meant they were to be outputted.

Wanted to type Polynomial to invoke the function.

[Walter Roberson]

https://www.mathworks.com/help/matlab/matlab_prog/create-functions-in-files.html

https://www.mathworks.com/help/matlab/ref/function.html