👉 To explain a specific aspect of mathematics, let's consider the concept of derivatives, which are fundamental in calculus. The derivative of a function \( f(x) \), denoted \( f'(x) \), measures the rate at which the function changes at any given point \( x \). Mathematically, it is defined as the limit of the average rate of change of the function over an interval \([a, x]\) as the interval shrinks to zero: \[ f'(x) = \lim_{h \to 0} \frac{f(x+h) - f(x)}{h} \] This limit represents the slope of the tangent line to the curve \( y = f(x) \) at the point \( (x, f(x)) \). Geometrically, it tells us how steeply the function rises or falls at a specific point. In practical terms, derivatives are crucial for optimization problems, physics (like calculating velocity and acceleration), and economics (for marginal analysis).