Here's one:
$$y=\frac{1}{1+\left ( \frac{x}{1-x} \right )^{-\beta}}$$
where $\beta>0$.
Ismam Huda
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Here's one:
$$y=\frac{1}{1+\left ( \frac{x}{1-x} \right )^{-\beta}}$$
where $\beta>0$.