[NKSΣ@nkswtr][2019/9/23 10:58:45]
x_kが全て正のとき、不等式がなりたつ
https://pbs.twimg.com/media/EFHSqW1VUAAxAt3.jpg
[Tweet URL: https://twitter.com/nkswtr/status/1175952611234566146 ]
https://twitter.com/5chan_nel (5ch newer account)