
 NonNewtonian Calculus 
  Each nonNewtonian calculus, as well as the classical calculus, can be ‘weighted’ in a manner explained in the book "The First Systems of Weighted Differential and Integral Calculus” (QA303.G876) by Jane Grossman, Michael Grossman, and Robert Katz. 
  In his article "NonNewtonian Calculus Applied to Probability, Utility, and Bayesian Analysis" (Proceedings of the American Statistical Association, 1980), he used nonNewtonian calculus to create a theory of probability that is adapted to human behavior and decision making. 
  That a whole family of differential and integral calculi, parallel to but nonlinear with respect to ordinary Newtonian (or Leibnizian) calculus, should have remained undiscovered (or uninvented) for so long is astonishing  but true. 
 www.geocities.com /nonnewtoniancalculus (682 words) 
