$f \in C^2([0,1])$ with $f''$ convex and $f(0) = f'(0) = f''(0) = 0$. Is it true that : $f''(1)+6f(1)\geq 4f'(1)$ ? --- <sub>Source: [AoPS][1]</sub> [1]: https://artofproblemsolving.com/community/c7h1570936