Wolfram Research
Wolfram Math World: Power Rule
MathWorld offers a definition of the power rule when taking derivatives of single variable terms. Contains a definition, formula, and links to related terms.
Northeast Parallel Architectures Center, Syracuse University
Npac Reu Program: L'hopital's Rule
This Northeast Parallel Architectures Center at Syracuse University site explores the use of L'Hopital's Rule on derivatives to find limits.
Other
Taro: An Application of the Derivative
This is a somewhat lengthy site discussing applications of the derivative using a trajectory problem as a template for understanding the concept. The page begins by defining a quadratic equation given three distinct points and then...