coeff di x^3...

costante additiva di f...

fun origine

derivata prima

derivata seconda

f1 = 0.4 (slider from -2 to 2, step 0.1)
fk = 0.7 (slider from -1.2 to 1.2, step 0.05)
f0 = 0 (slider from -1 to 1, step 0.05)
f(x) = (fk * x^(3)) + (f1 * x) + f0
g(x) = ((fk * 3) * x^(2)) + f1
h(x) = ((fk * 6) * x)