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📐 AP 预备微积分

AP Pre-Calculus · ≈120h

AP 预备微积分的完整备考闭环：学习路径规划 → 知识点图文与交互演示 → 章节练习（答案配图讲原理）→ 期中期末与限时模考 → 错题本与成绩分析。中英双语随时切换。 The full AP Pre-Calculus loop: learning path → knowledge figures & interactive demos → unit practice with figure-backed answer explanations → midterm/final and timed mock → mistake log and analytics. Fully bilingual.