👉 In mathematical notation, the term "carpogonial" is defined as a linear function that is both concave upward and convex downward. This means that it has a concavity index of 1/2, which indicates that it tends to decrease from left to right without reaching its maximum value. For example, consider the function f(x) = x^3 - 4x^2 + 6x - 5 in two dimensions. This is a quadratic function, and since