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用“<”或“>”填空.
(1);
(2);
(3);
(4).
用“>”或“<”填空:
若>1,则a_________1;若()m<(0.125)n,则m_________n;若1.7a<1.7b,则a_________b.
用“>”或“<”填空:
若>1,则a________1;若()m<(0.125)n,则m________n;若1.7a<1.7b,则a________b.
(1)若A={x|x2=x},则-1 A;
(2)若B={x|x2+x-6=0},则3 B;
(3)若C={x∈N|1≤x≤10},则8 C;
(4)若D={x∈Z|-2<x<3},则1.5 D.