# 黑龙江省大庆市2016_2017学年高一数学下学期期中试卷(含解析) (1)

2016-2017 12 5 60 1Aa+acbb+c0Bacbc Ca2b2 D 2{an} a2+a4+a9+a11=32 a6+a7= A9 B12 C15 D16 3ABC A A30 60 B45 60 C120 60 D30 150 4 2 A B C D 5{an}a1+a4+a7=3a3+a6+a9=27{an} 9 S9 A39 B21 C39 21 D21 36 6 8cm3 A8 cm2 B12 cm2 C16 cm2 D20 cm2 7ABC BO=CO=1AO= ABC A B C D 8ABC a=7b=3c=8 -1- A12 B C28 D 9 ax2+bx+20 {x| x } a+b A10 B14 C10 D14 10 ABCDA1B1C1D1 EF ABCC1 ADD1A1 D1EF A B 1 C 2 D 11 z=2x+y xy Azmax=12zmin=3 Bzmax=12z Czmin=3z Dz 12ABC ABC abc a1bc sinAsinBsinC b A B C D 4 5 20 13 ab=Ma b 14{an} n Sn=3n2+n+1 15 -2- 16 xy x+y=4 m 70 17 18ABC ABC abc cosAC+cosB=1a=2c C 19 ABCDA1B1C1D1 AA1=2AB=2BC A1B AD1 20 fx=x22x8 x2 fxm+2xm15 m 211ABCD CDP EFG PC PDCB PCD CD PABCD 2 PABCD AP EFG 22{an} n Sna1=1an+1=2Sn+1nN*{bn} bn0nN* b1+b2+b3=15 a1+b1a2+b2a3+b3 {an}{bn} -3- {anbn} n Tn -4- 2016-2017 12 5 60 1 ab0 Aa+cb+c Bacbc Ca2b2 D R3 ab0 a+cb+ca2b2 c0 acbcc=0 ac=bcc0 acbc ab0a+cb+ca2b2 ACD ab0c0 acbcc=0 ac=bcc0 acbc B B 2{an} a2+a4+a9+a11=32 a6+a7= A9 B12 C15 D16 8F a2+a11=a4+a9=a6+a7 {an} a2+a11=a4+a9=a6+a7 a2+a4+a9+a11=32a6+a7=16 D 3ABC A A30 60 B45 60 C120 60 D30 150 HP ABC b=2asinB sinB=2sinAsinB sinB0 -5- sinA= A=60 120 C 4 2 A B C D 7F A x=1 A =2 5{an}a1+a4+a7=3a3+a6+a9=27{an} 9 S9 A39 B21 C39 21 D21 36 89 n {an}a1+a4+a7=3a3+a6+a9=27 a2+a5+a8=9 a2+a5+a8=9 S9=3+9+27=39 S9=39+27=21 C 6 8cm3 A8 cm2 B12 cm2 C16 cm2 D20 cm2 LRLG 8 2 =2 4 2=12 -6- B 7ABC BO=CO=1AO= ABC A B C D LB AO= BC=B'C'AO BC AO= ABC AOBC AO= AO= BO=CO=1BC=2 AB=AC=2 ABC A 8ABC a=7b=3c=8 A12 B C28 D HXHQHR cosC= sinC= ABC -7- ABC a=7b=3c=8 64=49+9273 cosC cosC= sinC= SABC= D = 9 ax2+bx+20 {x| x } a+b A10 B14 C10 D14 75 ab ax2+bx+20 ax2+bx+2=0 + = = a+b=14 B 10 ABCDA1B1C1D1 EF ABCC1 ADD1A1 D1EF -8- A B 1 C 2 D LJ EF ABCC1 ADD1A1 D1EF 3 l ADD1A1 l ADD1A1 D1EF D1 l ADD1A1 l D1EF D1EF D 11 z=2x+y xy Azmax=12zmin=3 Bzmax=12z Czmin=3z Dz 7C z=2x+y y y A52 B11 z=2x+y A52z 12 z=2x+y B11z 3 -9- A C 12ABC ABC abc a1bc sinAsinBsinC b A B C D 8M b b a1bc a+c=21b sinAsinBsinC sin2B=sinAsinC sinA= sinB= sinC= b2=ac a+c2 21b2b 0b D - 10 - 4 5 20 13 ab=Ma b LP ab ab b