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Next.jsNewGeneral-purpose languages for apps, scripts and backends.
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Query, analyze and chart data, and put AI to work.
The command line and the tools every developer works with.
From arithmetic to trigonometry, worked out step by step.
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Chemistry from atoms to the periodic table, built on interactive benches.
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Security from the first alert to a contained breach.
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Build full-stack apps with AI: chat, preview, and publish.SQL for intermediate
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