The Constant Multiple Rule states that the derivative of a constant multiplied by a function is the constant multiplied by the derivative of the function. Mathematically, if $c$ is a constant and $f(x)$ is a differentiable function, then $(cf(x))' = c f'(x)$.
Power Rule: A basic rule of differentiation used to find the derivative of a function in the form $f(x) = x^n$, resulting in $f'(x) = nx^{n-1}$.
Product Rule: A rule for finding the derivative of the product of two functions, stated as $(fg)' = f'g + fg'$.
Chain Rule: $A rule for computing the derivative of the composition of two or more functions, expressed as (f(g(x)))' = f'(g(x)) \cdot g'(x).