let zero = 1e-1000
let diff(f) = (x) = (f(x + zero) - f(x)) / zero


let f(x) = do
    return x^10+x^9+x^8+x^7+x^6+x^5+x^4+x^3+x^2+x+1
let x = 100
let d = 0

forever do
    let n = f(x)
    term.log("f"+("'"*d)+"("+x+") = "+n)
    if (n == 0) break
    f = diff(f)
    d = d + 1