(1) Find f;f[f[x]] =x^4-2*x^3-4*x^2+5*x+4 を お願い致します; Find f で ググると ンとまぁ---- ↑は 想定外。 ↓は 想定内;https://socratic.org/questions/how-to-find-f-if-f-x-16x-3-6x-7-and-f-1-1 (2)c;y-f[f[x]]=0 なる 4次曲線 の 双対曲線c^★ を …

a+b+c=1 a+b+c=1 where a,b,c>0, what is the maximum value of a^2*b^2*c ? に 邂逅。 Weihao Huang Research student in University of Tokyo B.S. from Zhejiang University Graduated 2018 Lives in Tokyo 2018-present Knows Middle English https://ww…