Mathematics Archives
Math Archives: Visual Calculus: Maxima and Minima
Very good site explaining the maxima and minima. The site has examples and definitions along with links to help the student through the process.
Stefan Warner and Steven R. Costenoble
Finite Mathematics & Applied Calculus: Maxima and Minima
Students learn about applications of derivatives. Topics include maxima and minima. The tutorial explores the calculus concepts through notes and examples. A chapter quiz, review exercises, and chapter summary are included.
Wolfram Research
Wolfram Math World: First Derivative Test
This MathWorld site shows how to find extrema using the first derivative test.