机器学习-高数基础

导数和微分的概念 f ′ ( x 0 ) = lim ⁡ Δ x → 0   f ( x 0 + Δ x ) − f ( x 0 ) Δ x f'({{x}_{0}})=\underset{\Delta x\to 0}{\mathop{\lim }}\,\frac{f({{x}_{0}}+\Delta x)-f({{x}_{0}})}{\Delta x} f′(x0​)=Δx→0lim​Δxf(x

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