A function ##f:\mathbb{R}^3_+\to[0,1]## defined as ##f(\lambda,\beta,x)=1-e^{-\frac{\lambda}{\beta}\left(1-e^{-\beta x}\right)}## serves a lot of pain under integration.(adsbygoogle = window.adsbygoogle || []).push({});

As this function is used to describe a lower bound, could anyone suggest another non-zero function that would be smaller than ##f##?

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# Thinking of a lower bound for a function

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