2021 IMO Problems/Problem 2
Problem
Show that the inequality holds for all real numbers .
Solution
then, since then, therefore we have to prove that for every list [Xi], and we can describe this to we know that therefore, --Mathhyhyhy
Video solutions
https://youtu.be/cI9p-Z4-Sc8 [Video contains solutions to all day 1 problems]
https://youtu.be/akJOPrh5sqg [uses integral]