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內(nèi)蒙古赤峰二中2009屆高三3月統(tǒng)一考試

數(shù)學(xué)(理)

 

本試卷分選擇題和非選擇題兩部分。滿分150分,考試時(shí)間120分鐘.

 

              第Ⅰ卷(選擇題,共60分)

一  。選擇題:本大題共12小題,每小題5分,共60分.在每小題給出的四個(gè)選項(xiàng)中,只有一項(xiàng)是符合題目要求的.

 

1.若6ec8aac122bd4f6e6ec8aac122bd4f6e表示虛數(shù)單位),則復(fù)數(shù)在復(fù)平面內(nèi)對(duì)應(yīng)的點(diǎn)位于

A.第一象限     B.第二象限      C.第三象限        D.第四象限

2.設(shè)6ec8aac122bd4f6e

A.充分不必要條件  B.必要不充分條件  C.充要條件  D.不充分也不必要條件

3 .在各項(xiàng)均為正數(shù)的等比數(shù)列{6ec8aac122bd4f6e}中, 6ec8aac122bd4f6e、6ec8aac122bd4f6e是方程6ec8aac122bd4f6e的兩個(gè)根,則6ec8aac122bd4f6e的值為                        

A. 32           B. 64           C. 6ec8aac122bd4f6e64            D.256

4.設(shè)曲線6ec8aac122bd4f6e在點(diǎn)6ec8aac122bd4f6e處的切線與直線6ec8aac122bd4f6e垂直,則6ec8aac122bd4f6e

A.2                  B.6ec8aac122bd4f6e              C.6ec8aac122bd4f6e             D.6ec8aac122bd4f6e

5.已知f(sinx+cosx)=tanx(x[0,π]),則f (6ec8aac122bd4f6e)等于

   A .-6ec8aac122bd4f6e        B. -6ec8aac122bd4f6e        C. ±6ec8aac122bd4f6e      D. -6ec8aac122bd4f6e或-6ec8aac122bd4f6e

6ec8aac122bd4f6e6.一臺(tái)計(jì)算機(jī)裝置的示意圖如圖所示,其中6ec8aac122bd4f6e、6ec8aac122bd4f6e表示數(shù)據(jù)入口,C是計(jì)算結(jié)果的出口.計(jì)算過(guò)程是由6ec8aac122bd4f6e、6ec8aac122bd4f6e分別輸入正整數(shù)6ec8aac122bd4f6e,經(jīng)過(guò)計(jì)算機(jī)運(yùn)算后由C輸出的結(jié)果為正整數(shù)6ec8aac122bd4f6e.此裝置滿足下列三個(gè)性質(zhì):①6ec8aac122bd4f6e;②6ec8aac122bd4f6e;③6ec8aac122bd4f6e.現(xiàn)從6ec8aac122bd4f6e輸入5、6ec8aac122bd4f6e輸入6,則輸出結(jié)果6ec8aac122bd4f6e的值為

A.20          B.22         C.24       D.26

 

7.棱長(zhǎng)為3的正三棱柱內(nèi)接于球O中,則球O的表面積為

A.366ec8aac122bd4f6e        B.216ec8aac122bd4f6e             C.96ec8aac122bd4f6e          D.86ec8aac122bd4f6e

 

8.已知A6ec8aac122bd4f6e、B6ec8aac122bd4f6e,以AB為一腰作使∠DAB=6ec8aac122bd4f6e直角梯形ABCD,且6ec8aac122bd4f6e,CD中點(diǎn)的縱坐標(biāo)為1.若橢圓以A、B為焦點(diǎn)且經(jīng)過(guò)點(diǎn)D,則此橢圓的方程為

A.6ec8aac122bd4f6e     B.6ec8aac122bd4f6e     C.6ec8aac122bd4f6e    D.6ec8aac122bd4f6e

9.已知O為直角坐標(biāo)系原點(diǎn),P、Q的坐標(biāo)滿足不等式組6ec8aac122bd4f6e,則6ec8aac122bd4f6e的最小值為(   )

A、6ec8aac122bd4f6e          B、6ec8aac122bd4f6e            C、6ec8aac122bd4f6e             D、0

10 .袋中裝有編號(hào)從1、2、3、4的四個(gè)球,四個(gè)人從中各取一個(gè)球,則甲不取1號(hào)球,乙不取2號(hào)球,丙不取3號(hào)球,丁不取4號(hào)球的概率

6ec8aac122bd4f6e   A.6ec8aac122bd4f6e          B.6ec8aac122bd4f6e           C.6ec8aac122bd4f6e         D.6ec8aac122bd4f6e

11.如圖所示,O、A、B是平面上三點(diǎn),向量6ec8aac122bd4f6e在平面        AOB上,P為線段AB的垂直平分線上任一點(diǎn),

向量6ec8aac122bd4f6e6ec8aac122bd4f6e?(6ec8aac122bd4f6e)值是

   A.6ec8aac122bd4f6e       B.5          C.3         D. 6ec8aac122bd4f6e

6ec8aac122bd4f6e12.已知函數(shù)6ec8aac122bd4f6e的定義域?yàn)?sub>6ec8aac122bd4f6e,部分對(duì)應(yīng)值如下表,6ec8aac122bd4f6e6ec8aac122bd4f6e的導(dǎo)函數(shù),函數(shù)6ec8aac122bd4f6e的圖像如圖所示.若兩正數(shù)6ec8aac122bd4f6e滿足6ec8aac122bd4f6e,則6ec8aac122bd4f6e的取值范圍是

6ec8aac122bd4f6e

-2

0

4

6ec8aac122bd4f6e

1

-1

1

A.6ec8aac122bd4f6e             B.6ec8aac122bd4f6e          C.6ec8aac122bd4f6e          D.6ec8aac122bd4f6e

 

 

 

 

 

第Ⅱ卷(非選擇題,共90分)

二、填空題:本大題共4小題,每小題5分,共20分。請(qǐng)將答案直接填在題中橫線上。

13.若6ec8aac122bd4f6e6ec8aac122bd4f6e

            

試題詳情

14.直三棱柱6ec8aac122bd4f6e中,6ec8aac122bd4f6e,則直線6ec8aac122bd4f6e與平面6ec8aac122bd4f6e所成角的正切值為        。

試題詳情

15.已知函數(shù)f(x)= 6ec8aac122bd4f6e在x=1處連續(xù),則6ec8aac122bd4f6e   ___          

試題詳情

16.給出下列四個(gè)結(jié)論:

試題詳情

①若A、B、C、D是平面內(nèi)四點(diǎn),則必有6ec8aac122bd4f6e;

試題詳情

②“6ec8aac122bd4f6e”是“6ec8aac122bd4f6e”的充要條件;

試題詳情

③如果函數(shù)6ec8aac122bd4f6e對(duì)任意的6ec8aac122bd4f6e都滿足6ec8aac122bd4f6e,則函數(shù)6ec8aac122bd4f6e是周期函數(shù);

試題詳情

④已知點(diǎn)6ec8aac122bd4f6e和直線6ec8aac122bd4f6e分別是函數(shù)6ec8aac122bd4f6e圖像的一個(gè)對(duì)稱中心和一條對(duì)稱軸,則6ec8aac122bd4f6e的最小值為2;

其中正確結(jié)論的序號(hào)是                 .(填上所有正確結(jié)論的序號(hào)).

 

 

試題詳情

三、解答題:本大題共6個(gè)小題.滿分70分.解答應(yīng)寫(xiě)出必要的文字說(shuō)明、證明過(guò)程或演算步驟.請(qǐng)將解答過(guò)程寫(xiě)在答題紙的相應(yīng)位置.

 17.(本小題10分)已知向量6ec8aac122bd4f6e=(1+cosB,sinB)且與向量6ec8aac122bd4f6e=(0,1)所成的角為6ec8aac122bd4f6e,其中A、B、C為ΔABC的三個(gè)內(nèi)角。

試題詳情

(1)求角B的大;(2)若AC=6ec8aac122bd4f6e,求ΔABC周長(zhǎng)的最大值。

 

 

 

試題詳情

18.(本小題12分)四棱錐P-ABCD中,PA⊥底面ABCD,AB∥CD,AD=CD=1,∠BAD=120°,PA=6ec8aac122bd4f6e,∠ACB=90°。

試題詳情

6ec8aac122bd4f6e(1)求證:BC⊥平面PAC;

(2)求二面角D-PC-A的大小的正切值;

(3)求點(diǎn)B到平面PCD的距離。

 

 

 

 

 

 

 

 

 

 

試題詳情

19.(本小題12分)袋中有形狀大小完全相同的8個(gè)小球,其中紅球5個(gè),白球3個(gè)。某人逐個(gè)從袋中取球,第一次取出一個(gè)小球,記下顏色后放回袋中;第二次取出一個(gè)小球,記下顏色后,不放回袋中,第三次取出一個(gè)小球,記下顏色后,放回袋中,第四次取出一個(gè)小球,記下顏色后不放回袋中……,如此進(jìn)行下去,直到摸完球?yàn)橹埂?/p>

(1)求第四次恰好摸到紅球的概率;

(2)記ξ為前三次摸到紅球的個(gè)數(shù),寫(xiě)出其分布列,并求其期望Eξ。

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

試題詳情

20.(本小題滿分12分)

試題詳情

已知數(shù)列6ec8aac122bd4f6e滿足6ec8aac122bd4f6e

試題詳情

(Ⅰ)求數(shù)列6ec8aac122bd4f6e的通項(xiàng)公式;

試題詳情

(Ⅱ)若數(shù)列6ec8aac122bd4f6e滿足6ec8aac122bd4f6e,證明:6ec8aac122bd4f6e是等差數(shù)列;

試題詳情

(Ⅲ)證明:6ec8aac122bd4f6e

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

試題詳情

21.(本小題滿分12分)已知雙曲線6ec8aac122bd4f6e的離心率6ec8aac122bd4f6e,過(guò)點(diǎn)6ec8aac122bd4f6e6ec8aac122bd4f6e的直線與原點(diǎn)間的距離為6ec8aac122bd4f6e

(Ⅰ)求雙曲線方程;

試題詳情

(Ⅱ)直線6ec8aac122bd4f6e與雙曲線交于不同的兩點(diǎn)6ec8aac122bd4f6e,且6ec8aac122bd4f6e兩點(diǎn)都在以6ec8aac122bd4f6e為圓心的同一個(gè)圓上,求6ec8aac122bd4f6e的取值范圍.

 

 

 

 

 

 

 

 

 

 

 

 

試題詳情

22.(本小題12分)已知函數(shù)f(x)=ax36ec8aac122bd4f6ex2-2x+c,過(guò)點(diǎn)6ec8aac122bd4f6e,且在(-2,1)內(nèi)單調(diào)遞減,在[1,6ec8aac122bd4f6e上單調(diào)遞增。

(1)證明sinθ=1,并求f(x)的解析式。

試題詳情

(2)若對(duì)于任意的x1,x2∈[m,m+3](m≥0),不等式|f(x1)-f(x2)|≤6ec8aac122bd4f6e恒成立。試問(wèn)這樣的m是否存在,若存在,請(qǐng)求出m的范圍,若不存在,說(shuō)明理由。

試題詳情

(3)已知數(shù)列{an}中,a16ec8aac122bd4f6e,an+1=f(an),求證:an+1>8?lnan(n∈N*)。

 

 

 

試題詳情

一、選擇題:

1.D  2.A  3  B  4.D 5.A 6.D 7.B 8.C   9.A  10.B  11.A  12.B

二、填空題:

13.12           14.6ec8aac122bd4f6e    15   3           16.,①②③④   

三、解答題:

17.解:法(1):①∵6ec8aac122bd4f6e=(1+cosB,sinB)與6ec8aac122bd4f6e=(0,1)所成的角為6ec8aac122bd4f6e

6ec8aac122bd4f6e與向量6ec8aac122bd4f6e=(1,0)所成的角為6ec8aac122bd4f6e                                                    

6ec8aac122bd4f6e,即6ec8aac122bd4f6e                                                   (2分)

而B(niǎo)∈(0,π),∴6ec8aac122bd4f6e,∴6ec8aac122bd4f6e,∴B=6ec8aac122bd4f6e。                             (4分)

②令A(yù)B=c,BC=a,AC=b

∵B=6ec8aac122bd4f6e,∴b2=a2+c2-2accosB=a2+c2-ac=6ec8aac122bd4f6e,∵a,c>0。             (6分)

∴a2+c26ec8aac122bd4f6e,ac≤6ec8aac122bd4f6e (當(dāng)且僅當(dāng)a=c時(shí)等號(hào)成立)

∴12=a2+c2-ac≥6ec8aac122bd4f6e6ec8aac122bd4f6e                                               (8分)

∴(a+c)2≤48,∴a+c≤6ec8aac122bd4f6e,∴a+b+c≤6ec8aac122bd4f6e+6ec8aac122bd4f6e=6ec8aac122bd4f6e(當(dāng)且僅當(dāng)a=c時(shí)取等號(hào))

故ΔABC的周長(zhǎng)的最大值為6ec8aac122bd4f6e。                                                           (10分)

法2:(1)cos<6ec8aac122bd4f6e,6ec8aac122bd4f6e>=cos6ec8aac122bd4f6e

6ec8aac122bd4f6e,                                                                                   (2分)

即2cos2B+cosB-1=0,∴cosB=6ec8aac122bd4f6e或cosB=-1(舍),而B(niǎo)∈(0,π),∴B=6ec8aac122bd4f6e (4分)

(2)令A(yù)B=c,BC=a,AC=b,ΔABC的周長(zhǎng)為6ec8aac122bd4f6e,則6ec8aac122bd4f6e=a+c+6ec8aac122bd4f6e

而a=b?6ec8aac122bd4f6e,c=b?6ec8aac122bd4f6e                                      (2分)

6ec8aac122bd4f6e=6ec8aac122bd4f6e=6ec8aac122bd4f6e

=6ec8aac122bd4f6e                                (8分)

∵A∈(0,6ec8aac122bd4f6e),∴A-6ec8aac122bd4f6e

當(dāng)且僅當(dāng)A=6ec8aac122bd4f6e時(shí),6ec8aac122bd4f6e。                                         (10分)

 18.解法一:(1)∵PA⊥底面ABCD,BC6ec8aac122bd4f6e平面AC,∴PA⊥BC

∵∠ACB=90°,∴BC⊥AC,又PA∩AC=A,∴BC⊥平面PAC

(2)∵AB∥CD,∠BAD=120°,∴∠ADC=60°,又AD=CD=1

∴ΔADC為等邊三角形,且AC=1,取AC的中點(diǎn)O,則DO⊥AC,又PA⊥底面ABCD,

∴PA⊥DO,∴DO⊥平面PAC,過(guò)O作OH⊥PC,垂足為H,連DH

由三垂成定理知DH⊥PC,∴∠DHO為二面角D-PC-A的平面角

由OH=6ec8aac122bd4f6e,DO=6ec8aac122bd4f6e,∴tan∠DHO=6ec8aac122bd4f6e=2

∴二面角D-PC-A的大小的正切值為2。

6ec8aac122bd4f6e(3)設(shè)點(diǎn)B到平面PCD的距離為d,又AB∥平面PCD

∴VA-PCD=VP-ACD,即6ec8aac122bd4f6e

6ec8aac122bd4f6e  即點(diǎn)B到平面PCD的距離為6ec8aac122bd4f6e

19.解:(1)第一和第三次取球?qū)Φ谒拇螣o(wú)影響,計(jì)第四次摸紅球?yàn)槭录嗀

①第二次摸紅球,則第四次摸球時(shí)袋中有4紅球概率為

6ec8aac122bd4f6e                                                                            (2分)

②第二次摸白球,則第四次摸球時(shí)袋中有5紅2白,摸紅球概率為

6ec8aac122bd4f6e                                                                           (3分)

∴P(A)=6ec8aac122bd4f6e,即第四次恰好摸到紅球的概率為6ec8aac122bd4f6e。(6分)(注:無(wú)文字說(shuō)明扣一分)

(2)由題設(shè)可知ξ的所有可能取值為:ξ=0,1,2,3。P(ξ=0)=6ec8aac122bd4f6e;

P(ξ=1)=6ec8aac122bd4f6e;P(ξ=2)=6ec8aac122bd4f6e;

P(ξ=3)=6ec8aac122bd4f6e。故隨機(jī)變量ξ的分布列為:

ξ

0

1

2

6ec8aac122bd4f6e3

P

6ec8aac122bd4f6e

6ec8aac122bd4f6e

6ec8aac122bd4f6e

6ec8aac122bd4f6e

∴Eξ=6ec8aac122bd4f6e(個(gè)),故Eξ=6ec8aac122bd4f6e(個(gè))                                          (1

20.解:(1)6ec8aac122bd4f6e,6ec8aac122bd4f6e

故數(shù)列6ec8aac122bd4f6e是首項(xiàng)為2,公比為2的等比數(shù)列。

6ec8aac122bd4f6e,6ec8aac122bd4f6e…………………………………………4分

(2)6ec8aac122bd4f6e6ec8aac122bd4f6e

6ec8aac122bd4f6e

6ec8aac122bd4f6e

②―①得6ec8aac122bd4f6e,即6ec8aac122bd4f6e

6ec8aac122bd4f6e

④―③得6ec8aac122bd4f6e,即6ec8aac122bd4f6e

所以數(shù)列6ec8aac122bd4f6e是等差數(shù)列……………………9分

(3)6ec8aac122bd4f6e………………………………11分

設(shè)6ec8aac122bd4f6e,則6ec8aac122bd4f6e6ec8aac122bd4f6e

…………13分

21.解:(1)設(shè)6ec8aac122bd4f6e,6ec8aac122bd4f6e.

整理得AB:bx-ay-ab=0與原點(diǎn)距離6ec8aac122bd4f6e,又6ec8aac122bd4f6e,

聯(lián)立上式解得b=1,∴c=2,6ec8aac122bd4f6e.∴雙曲線方程為6ec8aac122bd4f6e.

(2)設(shè)C(x1,y1),D(x2,y2)設(shè)CD中點(diǎn)M(x0,y0),

6ec8aac122bd4f6e,∴|AC|=|AD|,∴AM⊥CD.

聯(lián)立直線6ec8aac122bd4f6e與雙曲線的方程得6ec8aac122bd4f6e,整理得(1-3k2)x2-6kmx-3m2-3=0,且6ec8aac122bd4f6e.

6ec8aac122bd4f6e ,    6ec8aac122bd4f6e,

6ec8aac122bd4f6e6ec8aac122bd4f6e,∴AM⊥CD.

6ec8aac122bd4f6e,整理得6ec8aac122bd4f6e,

6ec8aac122bd4f6e且k2>0,,代入6ec8aac122bd4f6e中得6ec8aac122bd4f6e.

6ec8aac122bd4f6e.

22.解:(1)∵6ec8aac122bd4f6e(x)=3ax2+sinθx-2

由題設(shè)可知:6ec8aac122bd4f6e6ec8aac122bd4f6e6ec8aac122bd4f6e∴sinθ=1。(2分)

從而a=6ec8aac122bd4f6e,∴f(x)=6ec8aac122bd4f6e,而又由f(1)=6ec8aac122bd4f6e得,c=6ec8aac122bd4f6e

∴f(x)=6ec8aac122bd4f6e即為所求。                                                     (4分)

(2)6ec8aac122bd4f6e(x)=x2+x-2=(x+2)(x-1)易知f(x)在(-∞,-2)及(1,+∞)上均為增函數(shù),在(-2,1)上為減函數(shù)。

(i)當(dāng)m>1時(shí),f(x)在[m,m+3]上遞增。故f(x)max=f(m+3),f(x)min=f(m)

由f(m+3)-f(m)=6ec8aac122bd4f6e(m+3)3+6ec8aac122bd4f6e(m+3)2-2(m+3)-6ec8aac122bd4f6e=3m2+12m+6ec8aac122bd4f6e得-5≤m≤1。這與條件矛盾故舍。                                                                        (6分)

(ii)當(dāng)0≤m≤1時(shí),f(x)在[m,1]上遞減,在[1,m+3]上遞增。

∴f(x)min=f(1),f(x)max={f(m),f(m+3)}max

又f(m+3)-f(m)=3m2+12m+6ec8aac122bd4f6e=3(m+2)2-6ec8aac122bd4f6e>0(0≤m≤1),∴f(x)max=f(m+3)

∴|f(x1)-f(x2)| ≤f(x)max-f(x)min=f(m+3)-f(1) ≤f(4)-f(1)=6ec8aac122bd4f6e恒成立

故當(dāng)0≤m≤1原式恒成立。                                                                        (8分)

綜上:存在m且m∈[0,1]合乎題意。                                                     (9分)

(3)∵a1∈(0,16ec8aac122bd4f6e,∴a26ec8aac122bd4f6e,故a2>2

假設(shè)n=k(k≥2,k∈N*)時(shí),ak>2。則ak+1=f(ak)>f(2)=8>2

故對(duì)于一切n(n≥2,n∈N*)均有an>2成立。                                        (11分)

令g(x)=6ec8aac122bd4f6e

6ec8aac122bd4f6e=6ec8aac122bd4f6e

當(dāng)x∈(0,2)時(shí)6ec8aac122bd4f6e(x)<0,x∈(2,+∞)時(shí),6ec8aac122bd4f6e(x)>0,

∴g(x)在x∈[2,+∞6ec8aac122bd4f6e時(shí)為增函數(shù)。

而g(2)=8-8ln2>0,即當(dāng)x∈[2,+∞6ec8aac122bd4f6e時(shí),g(x)≥g(2)>0恒成立。

∴g(an)>0,(n≥2)也恒成立。即:an+1>8lnan(n≥2)恒成立。

而當(dāng)n=1時(shí),a2=8,而8lna1≤0,∴a2>8lna1顯然成立。

綜上:對(duì)一切n∈N*均有an+1>8lnan成立。                                 

 

 

 

 

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