1、 1 2016 2017 B 1. 4 150 120 . 2. 2B . 3. 0.5 4. . I 50 10 5 50 . 1 A=x|log2 x 1 B=x|x 2 +x 2 0 A B A 2 B 0 1 C 2 2 D 1 2 p q p q A B C D 3 h= A B C D 4 m n A m n m n B C m m D m n m n 5 = = A 3 B C D 3 2 6 y=2sin 2x+ A y=2sin 2x+ B y=2sin 2x+ C y=2sin 2x D y=2sin 2x 7 an a1+3a8+a15=60 2a9 a10 A 6 B
2、8 C 12 D 13 8 y= A B C D 9 R f x f x+2 = 0 1 f x =3 x f log354 = A B C D 10 f x = x 3 ax 2 +bx+c x1 x2 x1 1 0 x2 0 1 A 0 3 B 0 3 C 1 3 D 1 3 100 5 5 25 . 11 = 1 x = x 1 2 x= 12 an n Sn S3=7a3 q= 13 1 22 1 ( 1 ) x x dx = 2 34 x x x f(x)=ln -f(1) , f (1) 3 14 y=loga x+3 1 a 0 a 1 A A mx+ny+1=0 mn 0 +
3、15 f x = f x =mx m 6 75 . 16 12 2 p: 0, ,cos 2cos 0 2 x x x a q x R x 2 +2ax 8+6a 0 p q p q a 17 12 f x =sin 2x +2cos 2 x 1 1 f x 2 ABC a b c A B C a=1 b+c=2 f A = ABC 18 12 an n Sn an Sn 1 bn b1 a1 b4 S3. (1) an bn (2) cn 1 bnbn 1 cn n Tn 1 3 Tn 1 2 . 19 12 1 50 7500 1 20 x+ 30 x 50 x 200 1 x P x P
4、 x 4 2 Q x x Q x =1240x x 3 20 13 AB ACD DE ACD ACD AD=DE=2AB F CD 1 AF BCE 2 BCE CDE 3 A BC F 21 14 f x =x 2 2a+1 x+alnx 1 a=3 y=f x 1 f 1 2 a 0 f x 3 ma f x 1 m 2016 2017 B CDBDA DCDBC 11. 2 1 12. 13. 14. 8 15. 1 ( , ) 2 e e 16. t=cosx 1 1 a=t 2 +2t 1 t 2 3 3 x 2 +2ax a 2 4 4 q p q 2 p q 3 4 a 0 2
5、 3 4 5 17. 1 = = = 2 2 2 , 2 6 2 k x k k Z , 36 k x k k Z f x 2 f A = 0 A A= b+c=2 A= 2 +c 2 2bccosA 1=4 3bc bc= S = 18. (1) an Sn 1 Sn 2an n 1 a1 S1 2a1 1 a1 1 n an Sn Sn 1 (2an 1) (2an 1 1) 2an 2an 1 an 2an 1 an an 1 2 an a1 1 2 an 2 n 1 4 bn d b1 a1 1 b4 a1+a2=a3=1 3d 7 d 2 bn 1 (n 2n (2) cn 1 bn
6、bn 1 1 n n 1 2 1 2n 1 1 2n 1 Tn 1 2 1 1 3 1 3 1 5 1 2n 1 1 2n 1 1 2 1 1 2n 1 n 2n 1 n N * Tn 1 2 1 1 2n 1 1 2 6 Tn Tn 1 n 2n 1 n 1 2n 1 1 n n 0 Tn Tn T1 1 3 1 3 Tn 1 2 19. 1 P x =50x+7500+20x+x x+ 30 +40 P x 220 2 L x =1240x x 3 x 2 +40x+8100 x =1200 x 2 2x= x+120 x 100 100 x 0 100 x 0 100 20. 1 CE
7、G FG BG CD GF= DE ACD ACD AB= DE DE=2AB GFAB BCE BG BCE BCE 2 F CD ACD AF ACD CDE CDE BCE CDE 3 A ABF A AF l AB x y z AD=2 A 0 0 0 B 0 0 1 C 1 0 F = 0 0 1 = ABC FBC 7 x1=1 = 1 0 = = A BC F 1 CE G FG BG CD GF= DE ACD ACD AB= DE DE=2AB GFAB BCE BG BCE BCE 2 F CD ACD AF ACD CDE CDE BCE CDE 21. I a=3 f
8、x =x 2 2a+1 x+alnx=x 2 7x+3lnx x =2x 7+ 1 = 2 1 =1 7= 6 y=f x 1 f 1 2x+y+4=0 II x =2x 2a+1 + = x =0 x1= x2=a a x 0 x a x f x 0 a 8 x 0 x a x a a= x x 0 0 a x 0 0 x a x x 0 a x 0 a x x a 0 a f(x) 0 a a a= f(x) 0 a f(x) 0 a a III 3 ma f x 1 ma 1 f x min II f x 1 3 x min=f 1 = 2a ma 1 2a m = 2 0 2 1 ma 1 2a
