if-a-b-c-gt-0-and-ab-bc-ca-2-then-cyc-a-b-4-c-4-b-3-b-2-c-bc-2-c-3-1-

Question Number 154320 by mathdanisur last updated on 17/Sep/21

if a; b; c > 0 and ab + bc + ca = 2 then :

\sum_{cyc} \frac{a (b^{4} + c^{4})}{b^{3} + b^{2} c + {bc}^{2} + c^{3}} ⩾ 1

Answered by ghimisi last updated on 17/Sep/21

Commented by mathdanisur last updated on 17/Sep/21

Very nice S er thank you