Is there any condition for product of increasing and decreasing functions to be quasiconcave?
More specifically, I am having in mind a condition for $F(x)\cdot(1-G(x))$ to be quasi concave where $F$ and $G$ are CDFs. Thank you in advance
2026-04-24 06:59:30.1777013970
Condition for product of increasing and decreasing functions to be quasiconcave?
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