5ADDCD 6.8 7 7.{x,y,z} {x,y} {z} 8.a≤5 a≥5 a<5 DCDBD 6.-3 DBAD单调递增 AC 3.a大于1小于等于3 CCB 4.1 5.3 6.f(1) =0 x大于3小于等于5 CBCA BDAAB DBAAD DDCAA ABAB 5.a大于1/5a或小于-1/ 5 No.11 1.24 2.f(t)={4t,(1≤t≥0) (1/2)^t-3,t≥1 (2)4又15/16h 3.10,6 (2) 5 (3) 不能 No.12 2.D 3.1 CCA (4) 5/2 (2)2根号2 (5) m=1?No.14 ACD 4.2.1 10.5 BADA 5.2 4 6.2 7.555 8.1397 9.4 DACC 5.1 分层 6.900 No.17 BADBAC DCBD 5.42.714 6.(4,10) BBD 4.0.4 0.82 0.6 5.3/ 5 6.错 7.(1)0.75 (2)0.3 8.
(1) 0.37 (2) 0.55 No.20 CABCA 6.1/50 7.1/3 8.1/4 5/9 9.67/288 10.1/4 选我啊~啦啦啦