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考研数学中,掌握常用的求导公式对于解题至关重要。******列举了一些基础且常用的求导公式,帮******生在复习过程中更好地理解和记忆。 1. **基本函数的导数**: - \( \frac{d}{dx}(c) = 0 \)(常数的导数为0) - \( \frac{d}{dx}(x^n) = nx^{n-1} \)(幂函数的导数) - \( \frac{d}{dx}(\sin x) = \cos x \) - \( \frac{d}{dx}(\cos x) = -\sin x \) - \( \frac{d}{dx}(\tan x) = \sec^2 x \) - \( \frac{d}{dx}(\cot x) = -\csc^2 x \) - \( \frac{d}{dx}(\sec x) = \sec x\tan x \) - \( \frac{d}{dx}(\csc x) = -\csc x\cot x \) 2. **复合函数的求导法则**: - 若\( y = f(g(x)) \),则\( y' = f'(g(x))g'(x) \) 3. **乘积法则**: - 若\( y = uv \),则\( y' = u'v + uv' \) 4. **商法则**: - 若\( y = \frac{u}{v} \),则\( y' = \frac{u'v - uv'}{v^2} \) 5. **链式法则**: - 若\( y = f(g(x))\),则\( y' = f'(g(x))g'(x) \) 6. **对数函数的导数**: - \( (\ln u)' = u'/u, u > 0\)(对数函数的导数) 7. **指数函数的导数**: - \( (a^u)' = a^u\ln a * u', a > 0, a ≠ 1\)(指数函数的导数) 8. **反三角函数的导数**: - \( (\arcsin u)' = u'/\sqrt{1-u^2}, |u| < 1\) - \( (\arccos u)' = |
