📘 machine learning, calculus

1. **Problem Statement:** We are given a loss function $$L(w) = w^4 - 4w^2 + 5$$ and need to find its critical points, classify them as local minima or maxima using the first deriv

1. **Problem Statement:** We analyze the sigmoid activation function $$\sigma(x) = \frac{1}{1+e^{-x}}$$ and its differential at specific points, then compare with the ReLU function