📐 MathLevel 2 — 🟢 Basicderivative👁 19 views⏱ 1 min read
解: 求导 f(x) = 7x³ + 3x² - 4x
📝 Problem
求导 f(x) = 7x^3 + 3x^2 - 4x✨Detailed Solution
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