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02 Dec 2020
Formula
\[y = log(1 + e^{x})\]
\(y = log(1 + e^{x})\) 大于0时接近 \(y = x\),小于0时接近\(y = 0\)
\(y = \frac{2}{1 + e^{-x}} - 1\) :x从0增加到无穷大时,y从0增加到1
© Yiheng Liu
2018