Report copyright - -3 -4 1 -4 · 2021. 1. 2. · 0,1 D D @ 1;1> f(x) 0 @2;3> f(x) 0 f a 1 a1 f(x) x² 3x 2 a1f(x) 4 x

Select PornographicDefamatoryIllegal/UnlawfulSpamOther Terms Of Service ViolationFile a copyright complaint