Solve with predefined parameters

Hi. I want to use the solve function using predefined parameters. eg. for equation 0 = a*x^2 +b*x + c

a = 2; b = -1; c = 4

fun = @(x,a,b,c)a*x^2+b*x+c

answer = solve(@(x) fun(x,a,b,c))

Something like this. What is the syntax I should use?

Answer 1

[Andrei Bobrov]

fun = @(a,b,c)roots([a b c])

Answer 2

[Titus Edelhofer]

Hi, usually I would use in the () for the anonymous functions only those variables, which are variable (and not fixed for this run of the code). I.e., I would use

a=2; b=-1; c=4;
fun = @(x) a*x.^2 + b*x+c;
answer = solve(fun);

But your solution should work as well ...

Titus