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AI got cheap enough that Duolingo’s most expensive plan may not survive it. I read the earnings call transcript and opened the app to see what is actually changing for learners.
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Introduction to HTML5
Umano Digitale
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A single-variable calculus course connecting rigorous limits, derivative-based optimization, and area under curves to the Fundamental Theorem of Calculus.
An introduction to vector operations, vector lengths, dot products, angles, and orthogonality in two, three, and n-dimensional spaces.
Learn to work with 2D and 3D vectors, including lengths, dot products, angles, and equations of lines and planes.
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