极值的判定方法

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Exploring Functions in Advanced Mathematics
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Functions are a core idea of advanced mathematics. This course walks through foundational concepts, key properties, and classic constants so you can read, reason, and compute with confidence.
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The World of Limits in Advanced Mathematics

Limits are the foundation of calculus and one of the most important ideas in advanced mathematics.

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Sequences

Sequences bridge discrete thinking and calculus. This track covers core definitions, limits, convergence, and classic models.