Fernando Castillo

Latest Release

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  Simplex: Linear Optimization

  Simplex Method Step by Step

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iPad & iPhone

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  Simplex: Linear Optimization

  Simplex Method Step by Step

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  ElectricCosts - Save Energy

  Track your utility power costs

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  Smart Budget - Finance App

  Budgeting and Personal Finance

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  VehicleCosts

  Vehicle Costs Loads & Expenses

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  DoOrNotDo

  DO, It's Always Up to You

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  Number Tales

  Memorize numbers in a fun way

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