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Free public beta until December 4, 2026: every course is open, no card needed. After that, the first chapter of each course stays free and full access is a one-time $39 ($19 for up to 100 founding members chosen for helpful feedback). Your progress is kept. How the beta works

table of values

A list of a function's inputs beside their outputs.

Examples

  • For f(x) = 2x + 3: inputs 0, 1, 2 beside outputs 3, 5, 7.

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