Hem yarı-dışbükey hem de yarı-içbükey olan bir fonksiyon yarı-doğrusaldır.
- A function that is both quasiconvex and quasiconcave is quasilinear.
... the president were reelected, we'd go to almost $20 trillion of national debt. This ...
... the last four years. The president's put it in place as much public debt ' almost as ...