Which company first used Markov Chain models for predicting educational product adoption patterns in mathematics curriculum?

In the intersection of mathematics and product marketing, certain companies have pioneered the use of advanced mathematical models for consumer behavior prediction and product positioning. These innovations have transformed how mathematical products are marketed and have created new paradigms for educational technology companies. Test your knowledge about the revolutionary applications of mathematics in product marketing!

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Texas Instruments in 1998 with their graphing calculator market analysis
McGraw-Hill in 2002 with their adaptive learning platform
Wolfram Alpha in 2009 with their computational intelligence marketing
Khan Academy in 2011 with their personalized learning recommendation system