write the program to calculate real roots of quadradic equation with nested function.

hi,i I'm pretty new in matlab .i wanna write the program to calculate real roots of quadradic equation with nested function.

    function[x1,x2]= quadratic(a,b,c)
    d=0
    disc;
        function disc
            d = sqrt(b^2-4*a*c);
        end
    disc;
    x1 =(-b + d)/(2*a);
    x2 =(-b - d)/(2*a);
    end
Error:File: quadratic2.m Line: 6 Column: 11
Identifier 'd' is not a function or a shared variable. To share 'd' with nested function, initialize it in the current
scope. For more information, see Sharing Variables Between Parent and Nested Functions.

i have no idea what should i do...

Answer 1

[Alan Stevens]

You are over complicating things! All you need is

   function[x1,x2]= quadratic(a,b,c)
           d = sqrt(b^2-4*a*c);
           x1 =(-b + d)/(2*a);
           x2 =(-b - d)/(2*a);
    end

[ela mti]

i know but this is my homework and they said i should use nested function for solve