Quadratic question using the function command

Without using the roots command, write a function to calculate roots of the quadratic equation

ax^2+bx+c

Inputs to the function should be the coefficients a, b and c and output should 
be the roots. Test your program by setting a=2, b=3 and c= -1

So I know i have to have two files. One with the quadratic equations and the other script recalls the function. Heres What I have so far.

              function x=quad_equation(a,b,c)

              x(1)=(-b+sqrt(b.^2-4.*a.*c))/(2.*a)

              x(2)=(-b-sqrt(b.^2-4.*a.*c))/(2.*a)

Thats the first file

a=3;
b=3;
c=-1;
function outputs=quad_equation(a,b,c)
output=fzero(

And I am lost on what to do with the second file

Answer 1

[Walter Roberson]

In MATLAB, files that define functions must have "function" as the first non-comment word in the file; if you put assignments before the "function" statement then you will get an error about function definitions not permitted in that context.

[Chris]

function fx=quad_function(a,b,c)
a=3
b=2
c=-1
a_root=fzero(quad_function,a)
b_root=fzero(fx,b)
c_root=fzero(fx,c)

Alrght so I got this but how do I find the roots of the function?

[Walter Roberson]

function fx = quad_function
  a=3;
  b=2;
  c=-1;
  fx = quad_equation(a, b, c);
end

Answer 2

[abhirup chowdhury]

function fx=quad_function(a,b,c)

a=3

b=2

c=-1

a_root=fzero(quad_function,a)

b_root=fzero(fx,b)

c_root=fzero(fx,c)

[Walter Roberson]

Yes? That duplicates what Chris posted in 2013 ?