數(shù)學(xué)高二第一冊提高西安版答案

Level ★★★☆☆☆Level A1.（1）遞增(2)遞減(3)常數(shù)列(4)擺動(5)

(1)n

n(n

(1)n(2n2nn

a

n(1)n2

n 29BB

A

a0，奇 n(n

(2)an1

10n(3) 4 A

nB (2)A

an(nB-AB98 A2．(1)a4n a 5;n

an2nB

;n 1;n a (2)an ;n n

Aan4n

a 5;nnn4n5;naan1an

B

nn ★★★☆☆☆Level A4.(8,375B2anp0,q

AA

a12,dDBdBD是 A Dan5B組 -

A

95．B6．(1)略(2)

2n As3n2+nn

（2）sn-n2an3n(1)an4nBB

s2n2 (2)s3n2

A

1n23 an16nB an32n,k ACC． 37；． B2n11

A

CB45．B16．(1) ★★★★☆☆Level A1 53.4.na102nnB0,4,8,16

AD

2.（1）- 524.2nln3n(n2B2,10,50或2269 A2.

A1.-B

2或2C2 A1.DCC73B

A1.2.-3.

4.325.B A1q4,an2nB（1）a （2）b6(2n

1

Aq

a1或a12n B（2）an52n1 ★★★★☆☆Level ann21n(nan()2

9,n32,n

21n((an2n

3n

an3nn1n(nan()2an4nan2n11

32()n2an

1n21n2 2n13n21n 22(1)a2n1,Sn2 (2)T 4(n(1)a2n1,S (2)T (1)an21

1

()n1

(2)s2n4 2

(1)S1(3n11 3(3n1)

2n②

2n1nn (1)①an,S1n2 ② ①a2n1,bn n (1)①

②

86n 9

Level ★★★☆☆☆Level A 3BAA 2.3 B A1.2326,3 6 6 A ,C ,c 或A ,C ,c DB組

A

1.2B1略B 4

,S

10025 ★★★☆☆☆Level A1.4B組 (2)①BC ②CDA 4B組 6 AD42B (2)1b2

AA22C6

B (2)105 ★★★☆☆☆Level AB35BB(1)10 (2)與本關(guān)A

A1.82.3.103 B

(2)50 Level★★★☆☆☆Level < < > Abbm(ab0,m aB組5．(

ABBCB

AB(1)ca (2)ac (3)bax4x3yxy3略B組

A1.2.3.4.5.B6.

★★★☆☆☆Level A }(1){x|1x (2){x|x1或x (3){x|x1或x}5(1){x|x2或-1x (2){x|1x2或1x2

(4){x|1x(3){x|x2或1(1){x|x32x3

(2){x|0x1或x1或x1}B}(1){x|x9或x}3

AD

(1 (2){x|x4或x(1{x|x1且x(1{x|x1或xB

(2){x|4x2或x(2){x|1x2或x(1){x|1x2或x3或x (2) A當(dāng)a1時，{x|1x或x1;當(dāng)a1時，{x|x1};當(dāng)0a1時，{x|1x或x {m|1m或m{a|2aB組B(1)(- Aa1時，{x|a1x或x }a1時，{x|x} a1時，{x|ax或xa1}}{a|2a}5{m|0m{a|1aB1(2 ★★★☆☆☆Level A(,4B AB ADB最大值29，最小值D

A 3020B ★★★☆☆☆Level A1.(1)f6

126,x

]BA]BA (2)10m100m2Bf

126,x2AB1B5[2,2 A5B2BBCA(,9)(7,B4.2592B,6.(,4 Level★★★☆☆☆Level A1x2y21100 x2y2 x2y2 1x2y21

1x2y2132

A

y21 11x2y21

y211 11

x2y2 A1．2．D( 2b8．m9．52

A1．2．3

4.3k5且k 3 73x8y100和x9．2★★★☆☆☆Level A 916x2 3y2yx2 9

A

1 64 205 916 312 A1.2m6．5

A組