What is the constant rule for derivatives?

The constant rule is one of the fundamental rules used to find the derivative of a function. It states that:

• If you have a function in the form of $f(x) = c$, where $c$ is a constant, then the derivative of that function with respect to $x$ is $0$.
• In other words, the derivative of a constant is always $0$, regardless of the value of the constant. This is expressed as: $\frac{d}{dx}(c) = 0$