初升高銜接數(shù)學測試題

Forpersonaluseonlyinstudyandresearch;notforcommercialuse銜接班數(shù)學練習題一．選擇題（每小題5分）1．若SKIPIF1<0，則SKIPIF1<0等于（）SKIPIF1<0SKIPIF1<0SKIPIF1<0SKIPIF1<0SKIPIF1<0SKIPIF1<0SKIPIF1<0SKIPIF1<02.已知關于x不等式2x2＋bx－c＞0的解集為SKIPIF1<0，則關于x的不等式SKIPIF1<0的解集為（）SKIPIF1<0SKIPIF1<0SKIPIF1<0SKIPIF1<0SKIPIF1<0SKIPIF1<0SKIPIF1<0SKIPIF1<03.若0＜a＜1,則不等式（x－a）(x－SKIPIF1<0＜0的解為（）(A)SKIPIF1<0；(B)SKIPIF1<0；(C)SKIPIF1<0；(D)SKIPIF1<04、方程x2－4│x│+3=0的解是()A.x=±1或x=±3B.x=1和x=3C.x=－1或x=－3D.無實數(shù)根5．已知SKIPIF1<0,SKIPIF1<0,則SKIPIF1<0與SKIPIF1<0的值分別是（）A.4,1B.2,SKIPIF1<0C.5,1D.10,SKIPIF1<06.已知SKIPIF1<0的圖像時拋物線，若拋物線不動，把X軸，Y軸分別向上，向右平移2個單位，那么在新坐標系下拋物線的解析式是（）A.SKIPIF1<0B.SKIPIF1<0C.SKIPIF1<0D.SKIPIF1<07.已知SKIPIF1<0，則函數(shù)SKIPIF1<0------------------------（）有最小值SKIPIF1<0，但無最大值；(B)有最小值SKIPIF1<0，有最大值1；(C)有最小值1，有最大值SKIPIF1<0；(D)無最小值，也無最大值.8.設SKIPIF1<0是方程SKIPIF1<0的兩實根，則SKIPIF1<0的最小值為（）SKIPIF1<0SKIPIF1<0SKIPIF1<0SKIPIF1<0SKIPIF1<02SKIPIF1<0SKIPIF1<09.若關于x的二次方程2(k+1)x2+4kx+3k-2=0的兩根同號，則實數(shù)k的取值范圍為------（）（A）SKIPIF1<0（B）SKIPIF1<0（C）SKIPIF1<0（D）SKIPIF1<010.當SKIPIF1<0時，函數(shù)SKIPIF1<0有最小值是SKIPIF1<0，則SKIPIF1<0的值為（）SKIPIF1<01SKIPIF1<03SKIPIF1<01或3SKIPIF1<0SKIPIF1<011.已知函數(shù)y=ax2＋bx＋c(a≠0)的圖象經(jīng)過點(－1,3)和(1,1)兩點,若0＜c＜1,則a的取值范圍是()A．(1,3)B．(1,2)C．[2,3)D．[1,3]12.若關于X的不等式SKIPIF1<0為空集，則a的取值范圍是（）A.a<1B.aSKIPIF1<0C.0<a<1D.SKIPIF1<0aSKIPIF1<0二、填空題（每小題5分）13.已知SKIPIF1<0，SKIPIF1<0，則SKIPIF1<0_____________.14.不等式|x2+2x|＜3的解為____________.15.計算：SKIPIF1<0=____________．16.已知關于SKIPIF1<0的方程SKIPIF1<0有兩個根，且一個根比SKIPIF1<0小，另一個根比SKIPIF1<0大，則實數(shù)SKIPIF1<0的取值范圍是____________．三．解答題17.設函數(shù)SKIPIF1<0.（1）作出函數(shù)的圖象;（2）求函數(shù)SKIPIF1<0的最小值及SKIPIF1<0取最小值時的SKIPIF1<0值.18.已知關于x的方程x2－2（k－1）x+k2=0有兩個實數(shù)根x1，x2.(=1\*ROMANI)求k的取值范圍；(=2\*ROMANII)若，求k的值．19.已知a為實數(shù)。（1）解不等式：SKIPIF1<0；（2）若（1）中的不等式的解包含所有2到5的實數(shù)（包括端點），求a的取值范圍。20.關于x的方程2SKIPIF1<0-3x+2m=0的兩根都在[-1，1]上，求實數(shù)m的取值范圍．21.設二次函數(shù)SKIPIF1<0在區(qū)間SKIPIF1<0上的最大值為2，求實數(shù)a的值。22.已知當m∈R時，函數(shù)y＝m（x2－1）＋x－a的圖象和x軸恒有公共點，求實數(shù)a的取值范圍.僅供個人用于學習、研究；不得用于商業(yè)用途。Forpersonaluseonlyinstudyandresearch;notforcommercialuse.Nurfürdenpers?nlichenfürStudien,Forschung,zukommerziellenZweckenverwendetwerden.Pourl'étudeetlarechercheuniquementàdesfinspersonnelles;pasàdesfinscommerciales.

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