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原创 逻辑回归求导证明

知识准备： (logx)′=1/x (logx)' = 1/x (logx)′=1/x Power rule: ddx xn=lim⁡h→0 (x+h)n−xnh  \frac{d}{dx}\ x^n = \lim_{h→0}\ \frac{(x+h)^n - x^n}{h}\ dxd​ xn=h→0lim​ h(x+h)n−x...