# លំហាត់គណិតវិទ្យា (វិសមភាព)

គេអោយអនុគមន៍ $f:\mathbb{R}\rightarrow \mathbb{R}_{0}^{+}$ ផ្ទៀងផ្ទាត់ $f''(t)>0 \forall{t\in D_f}$ ។ ស្រាយបញ្ជាក់ថាចំពោះ $a\geq b\geq c ; a, b, c\in D_f$ គេបានៈ

$\displaystyle (\frac{b}{c}-1)f(a)+(\frac{c}{a}-1)f(b)+(\frac{a}{b}-1)f(c)\geq 0$

## អត្ថបទថ្មីៗ

លំហាត់គណិតវិទ្យា (វិសមភា)

សិស្សពូកែអូឡាំពិក(ខ្មែរនៅវៀតណាម)

នៅវៀតណាមមានបាតុភូតុចំឡែកកើតឡើង

សំនួរប្រឡងសិស្សឆ្នើម

## មើលផងដែរ

វិសមភាពទី 1 វ៉ាន់ ឃា

Moldova TST 2006

Mecedonia 1999

IMO Shortlist 1998

IMO Shortlist 1990

Komal magazine

Balkan MO

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