derivatives for exams

📘 Derivative Formulas 🔹 1. Basic Rules \[ \frac{d}{dx}(c) = 0 \quad \text{(c = constant)} \] \[ \frac{d}{dx}(x) = 1 \] \[ \frac{d}{dx}(x^n) = n x^{n-1} \quad \text{(for any real } n) \] 🔹 2. Trigonometric Functions \[ \frac{d}{dx}(\sin x) = \cos x \] \[ \frac{d}{dx}(\cos x) = -\sin x \] \[ \frac{d}{dx}(\tan x) =…