指對(duì)數(shù)函數(shù)練習(xí)題a001+da

1、第1頁(yè)共4頁(yè)指數(shù)函數(shù)對(duì)數(shù)函數(shù)練習(xí)題（指數(shù)函數(shù)對(duì)數(shù)函數(shù)練習(xí)題（A001）一、選擇題一、選擇題1下列函數(shù)中，指數(shù)函數(shù)的個(gè)數(shù)是（B）①②③④⑤xy3?xy23??xy??3xy????????21xy21?A.1B.2C.3D.42若指數(shù)函數(shù)是R上的減函數(shù)，則取值范圍是（D）xaxf)1()(??aABCD2?a2?a10??a21??a3若函數(shù)是指數(shù)函數(shù)，則有（C）xaaay????)33(2A、B、C、D、21??aa或1?a2?a10?

2、?aa且4將指數(shù)函數(shù)的圖像按向量=平移后得到左（1）圖，則=(A)??fx?a??10??1fx?ABCD2logx23logx3logx32logx5在圖（2）中，分別表示指數(shù)函數(shù)4321SSSS、、、、、、的圖像，則關(guān)于底數(shù)大小的判斷，下列xay?1xby?2xcy?3xdy?4式子中正確的是（D）ABdcba?????10dcab?????10CDcdba?????10cdab?????106已知函數(shù)（D）???????)]21(

3、[)0(log)0(3)(2ffxxxxfx則A－1BCD3log233122oyx(1)XYXYS1S2S3S4XYXYS1S2S3S4(2)第3頁(yè)共4頁(yè)15函數(shù)的圖象大致是（B）|1|ln)(??xxf16函數(shù)的定義域是（B）23log(632)yxx???AB33[11]33??33(11)33??CD33(1][1)33???????33(1)(1)33???????17已知=則f(2009)等于（B）)(xf???????0)

4、(log0)5(2xxxxf(A)–1(B)0(C)1(D)218若，則（A）0()ln0xexgxxx??????1(())2gg?AB1CD222ln2?19對(duì)數(shù)式中，實(shí)數(shù)的取值范圍是（A）??baa???5log2aABCD????5332???52??5??????220在同一平面直角坐標(biāo)系中，函數(shù)與的圖像關(guān)于（C）12)(??xxfxxg??12)(A坐標(biāo)原點(diǎn)對(duì)稱BX軸對(duì)稱CY軸對(duì)稱D直線對(duì)稱0??yx二、填空題二、填空題21

5、函數(shù)的圖像總經(jīng)過(guò)一個(gè)定點(diǎn)___________??10????aaayx??1022指數(shù)函數(shù)的圖像經(jīng)過(guò)點(diǎn)，則。??e?_________)(???fe123當(dāng)時(shí)，的值域是________.??11??x23)(??xxf???????13524函數(shù)在上的最大值與最小值的和為3，則2??10????aaayx??10___?a25已知函數(shù)是偶函數(shù)，則1xxeaaexf??)(___?a26函數(shù)的定義域是??21log???xya????1