The concepts of extrema and critical points of functions is an extremely useful concept in mathematics, particularly the areas of calculus and differential equations. Extrema may be absolute, such as the maximum (or highest) value or the minimum (or...

In mathematics, particularly in calculus, a stationary point is an input to a function where the derivative is zero (equivalently, the gradient is zero): where the function "stops" increasing or decreasing (hence the name). For the graph of a...

Firm: EAI Art director: Matt Rollins Designers: David Cannon, Courtney Garvin Illustrator: Clancy Gibson Cilient: Faith in the City Like any great city, Atlanta has its share of complex social issues. But unlike most cities, Atlanta has had the...

Enrique Del Castillo is Associate Professor, Department of Industrial and Manufacturing Engineering, Penn State University, University Park, PA 16802 (E-mail:exdl3@psu.edu). Suntara Cahya is a Ph.D. candidate in the Department of Industrial and Manufacturing Engineering, Penn State University, University Park, PA 16802. The authors thank...