Here's the new description with all links and additional text removed: Learn how to graph piecewise functions. A piecewise ...

👉 Learn how to evaluate the limit of a piecewise function. A piecewise function is a function that has different rules for a ...

Of course this produces the same derivative values as the usual limit-based definitions of the derivative. What makes this possibly preferable to the usual formulas, though, is that it arises out of ...