f1 (x) = x 0 ≤ x ≤ 1 = 1 x…

f1 (x) = x 0 ≤ x ≤ 1 = 1 x ≥ 1 = 0 otherwise f2 (x) = f1(–x) for all x f3 (x) = –f2(x) for all x f4 (x) = f3(–x) for all x How many of the following products are necessarily zero for every x: f1(x) f2 (x), f2 (x) f3 (x), f2(x) f4 (x)

AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #88321