2021屆河北省張家口市高考一模數(shù)學試卷

RR2021年河北張家口市高數(shù)學一模卷一選題共8?。〢RABBAA

BC

DR

A

B

C

D931A

B

C369

DpHpHpH[+

][H]/17.45107.35pHA7.55]B[7.25[7.257.35]DlmllmlllA

B

C

DA

B

C

DCbFOAFxDEAD2DE

AD|AEC

22n22nA

B

C

Dfx4A0C00二選題共4?。〢3||C30

B4D44BD1011XABC

BD11ababACloga+log6

BD12x+2tanfgxfxAfBfxRCgxDx

三填題共4小）1320FPF14315fsinx+acos

fx

nnniiiinnniiii16sin36四解題共6?。?7{}n12

18B

C1B22ABC19ABCD是PAPAEBAB1PAD2PDPCE20lny

iii12001iii12001v

v1546.5bxmkmk0y

++21x3公式歸方程

t

率和距最小乘估計式為21abFFllMl1

l

kl

ABF221fx[12]

2a1x+

RRRR參考答案一選題共8?。〢RABBAABBCVennBD

DR

A

B

C

D931A

B

C369

D3CpHpHpH[+

][H]/17.45107.35pHA7.55]

B[7.257.45]C[7.257.35]D[7.357.45][7.357.45]

DlmllmlllA

B

C

DlllllllllmmA

B

C

D

DCbFOAFxDEAD2DE

AD|AEC

A

B

C

D45AD2ABba0

ac

c

20c+

e+e1e1C

fx4A0C00

B4D44xRx0+4f4x

xx，4二選題本共4小題每題分共分．每題出選中有項合題要．部對得，分對得2分，選的0分．A3||C30

BD

C

CD，

D1011XAB

B

2222222222222222C

D0

11

22

334X4X4X11abab

CDACloga+log6

BD00a+8ba8b212a41

于B

所以

BCC

2b2a+log8a+3+log2loga6ab02a+8b12a+82a2

1a2

+128

2a

D

nnABC

12x+2tanfgxfxAfBfxRCgxDx

fx

f+2tan2tanxxfxxffxxfxRx{|x

+}

x+2+2

x+

gCtx

txD三填題本共4小題每題5分共20分．134

2CF5

4C204218y

14326

112n112n3aaaa126615x+acosx

x

2]f

f

|sin

+a

x

[12]16sin36Rrl

nnnnnnnnRr2R2

四解題本共6小題共70分．答寫文說、明程演步．17{}n12{}q

21n*

18B

C1B22ABC1sin02c2ABC

+

accos

2ABC19ABCD是PAPAEBAB1PAD2PDPCE

1ABCDADPADBCPADPABCEBEBC2ADABAPzPAP00D30301

z3

PD

iiiiiiiiiiiiiiPCE20lnyv

v1546.5bxmkmk0y

++21x3公式歸方程

t

率和距最小乘估計式為1y?xk2mxk+

1200101212001012

y3

x

x49.821abFFllMl1

l

kl

ABF1Pxy

2lyx2Ax

21102110x12+150ABABFABll

yx

x

221fx[12]2a1x0+0+x0a

x0+x[2]x[1a

fx

x

i

afx[1x[1f1ii

x[12]

x[1

iii

x