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The testimonials on the homepage are aggressively positive, what has your existence been like? I’m interested in revisiting the various University topics, particularly DiffEQ/stats/LinAlg, and have been looking for an excuse/resource to study.

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My experience has been that I never fail to make progress whenever I encounter something I didn’t know or was weak in. The system offers you plenty of practice problems, at just the right level, to make sure you master the material before moving on to material that builds on the previous lesson.

Aggressively positive? Maybe. I have been a paying customer since october and very happy with the results.

Thanks for responding. I may give it a try!

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