1. The quotient rule is a formula used to find the derivative of a function that is the quotient of two differentiable functions.\n2. Suppose we have two functions $f(x)$ and $g(x)$, and we want to differentiate the function $h(x) = \frac{f(x)}{g(x)}$.\n3. The quotient rule states: $$h'(x) = \frac{f'(x)g(x) - f(x)g'(x)}{(g(x))^2}$$\n4. This means you take the derivative of the numerator multiplied by the denominator, subtract the numerator multiplied by the derivative of the denominator, and then divide everything by the square of the denominator.\n5. This rule helps calculate derivatives efficiently without using the limit definition every time.