2021全國中考數(shù)學試卷分類 閱讀理解

2021類-42解(含解析42閱讀理(含解)一選題15OABE()A12

B

C13

D26OAEAB6OAOEx2CDAB10OOACEOExAOEx

2

x

x2626)CDD

y2021類-42解(含y2{}

a(a)b(a)

y{

x3}()A0B2CD4x2

2yxy3OABCA2C

222021類-42解(含解析22ymA4

5172

C4D

5172

1畫ABBACmmmyxA0022BCBCAm

2222021類-42解(含解析222yxmmA2myxmmB2m

5171722

yxm5172

1D本T8122122×10×10+1×10+2F

1

…

9101115

…

1

…

9ACDE

…2B10C1×16×16+0×16+1214A2862238D141×16×16+4×16+14334D二填題1811rad60°αβ

12112112211222121121121211211121121122112221211211212112112122βα60°β60°∴β11三解題yfxx1xfxxf2xfxxfx0xx0xfxxx+xx0x+0xx0x+xx0xx0fxfxx1f14

111x1f3x

f4

121221212x4a232aaamnaa2021類-42解(含解析121221212x4a232aaamnaa2f

1x

x

23

1134132fx

1x

xxxx

f(x)(x)12

11x21xxx121

x0x0x

x21x12

fxx

1x

x0本JNpler15501617EvlerNa1xaNxlog216log162log39logMlogM+logN1M00logMmlogNMNa

mnmnaaaaa237aaa55mnaaaaaaaa5530223377mnaaaaaaaa552021類-42mnmnaaaaa237aaa55mnaaaaaaaa5530223377mnaaaaaaaa55Ma+logM+logM+logNlogNMN1①log325②log③02log

loglogNa0a103log125+loglog有2Mlog

3logMNlogMNlog

loglogN12530loglog25log27log33loglog7002MlognMNaMloganlogMloglog

logMlogN1N3log30log2本32312

11212122021類-42解1121212MyxyNMNN20①B4A

12②Cx4AACP362yPQ

kx

20424②C442PQMPNQMNMNA204AB12

2021類-42解(含解析②C4CC42ACykx+21b2yx22k1b2yx+2ACyx2x+2P34Q62PQ24kyMk6xy

kx

24y

kx

Q24k6

．．．．．．．．．．．．．2021類-42．．．．．．．．．．．．．本410ACBCCDEaBDab①CECDb②CE2Nyxmnpm+nq

pq①n2

mn3l1②l

12

22021類-42解(含解析2CD②mn②2MMAxAyNxNFyFMNMNJJGJCxJk1ACBCCDBACDAA+B90ACDBCDB

2021類-42解(含解析ADaDBCD0CD90AEa+②ABa+b