The Most Arbitrary Wizard

ThisisanironchainforgedfromMagicPower.Youcannotbreakfreeusingbruteforce.Butit'sokay,youarealsoaWizard;youtrytodefeatMagicwithMagic.Butyoufailed.Youhavenochoicebuttore-examinetheironchain,onlytodiscoverthatitiscomposedoffaintlyglowingletters,linkedbymanysymbolsthatyourecognizeindividuallybutarecompletelyincomprehensiblewhenputtogether,ultimatelyformingaseriesofinequalities.Yourintuitiontellsyouthatthekeytobreakingthemagicalshacklesistosolvetheseinequalities.Buttheproblemis...【if...f'(x)≥1/4,f(2)≥0,x≥3...max{f(x)}=?】“???”“WhothehellusesMagicthisway?!”