URLhttps://x.com/aki_mathteacher/status/1779835048877056142?s=46&t=7H_7UN7FOcgsW_tFgJfzpwファイルhttps://pbs.twimg.com/media/GLM-iMZbEAAlo2O.jpg:orig出典https://mao.5ch.net/test/read.cgi/ngt/1712967384/856-