The Zero Saga

Posted by Armando Brito Mendes | Filed under Investigação Operacional, matemática

debate um erro comum em IO x/zero=infinito

debate um erro comum em IO x/zero=infinito

  1. Introduction
  2. A Common Fallacy
  3. Dividing by Zero Can Get You into Trouble!
  4. A Sample of the Grown-ups’ Arguments Insisting on Dividing by Zero
  5. What About Taking the Limit?
  6. Educating the Educators
  7. Act of Dividing by Zero Is a Meaningless Operation: Forget Its Result
  8. Origin of the Common Fallacy: Dividing by Zero
  9. The Need for Numbers
  10. The Two Notions of Zero
  11. Is Zero Either Positive or Negative?
  12. Is Zero an Even or Odd Number?
  13. Zero is “not there”
  14. Is 1 a Number or Just a “Unit” for Counting?
  15. Origin of Infinity and its Symbol
  16. Other Apparent Difficulties with Zero
  17. Descartes’ Representations of Numbers
  18. Mathematics Is for Unification and Extensions
  19. Genealogy of Rational and Irrational Numbers
  20. The Two Numbers Nature Cares Most: Inventions or Discoveries
  21. Equation: Its Structure, Roots, and Solutions
  22. SQRT(4) = +2, and – 2 right? Misplacement of the Sign
  23. 1 = 2 right? Confusions between Continuous and Discrete Variables
  24. 1 = 5 right? Confusions between Numbers and Operations
  25. Recurring Fractions Are Rational Numbers: Confusions between Series and Their Limits
  26. IEEE Special Floating Point
  27. 0 = 1 right?
  28. From Finger Numbers to Computer: The Most Fascinating Journey
  29. Errant Views and Calculator-assisted Experiment
  30. Notes, Further Readings, and References
  31. A Collection of JavaScript E-labs Learning Objects
    Europe Mirror Site Collection

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Read more | Comments off | June 24th, 2011

Linear Optimization with Applications

Posted by Armando Brito Mendes | Filed under Investigação Operacional, matemática, materiais ensino

Uma boa página sobre programação linear

Uma boa página sobre programação linear

  1. Introduction & Summary
  2. Optimization-Modeling Process
  3. Ingredients of Optimization Problems and Their Classification
  4. Linear Programming (LP)
  5. Dual Problem: Its Construction and Economics Implications
  6. Learning From the Optimal Strategy
  7. Goal-Seeking Problem
  8. Exercise Your Knowledge to Enhance What You Have Learned (PDF)
  9. Linear Optimization Solvers to Download (free-of-charge),

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Read more | Comments off | June 17th, 2011

The Science of Better

Posted by Armando Brito Mendes | Filed under Investigação Operacional

OR The Science of Better

what is O.R.?

In a nutshell, operational research (O.R.) is the discipline of applying advanced analytical methods to help make better decisions.

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Read more | Comments off | January 27th, 2011

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