x = bisection_method(f,a,b) returns the root of a function specified by the function handle f, where a and b define the initial guess for the interval containing the root. x = ...

If a function f(x) is continuous on the interval [a..b] and sign of f(a) ≠ sign of f(b), then: There is a value c ∈ [a..b] such that: f(c) = 0 I.e., there is a root c in the interval [a..b] The ...