Which e-commerce platform was the first to introduce an adaptive algorithm for personalized mathematics textbook recommendations based on a user's academic level and learning patterns?

The digital revolution has transformed how mathematical tools, textbooks, and educational resources are distributed and accessed. E-commerce platforms specializing in mathematical products have evolved significantly over the decades, changing how educators, students, and professionals acquire resources. Test your knowledge about the history and development of mathematics-focused e-commerce platforms that have shaped the industry!

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MathWorld Market (2003)
EquationSolver Store (2007)
MathBrain Exchange (2005)
Calculus Commerce (2008)