試卷第=page11頁，共=sectionpages33頁第7練函數(shù)與方程學(xué)校____________姓名____________班級____________一、單選題1．設(shè)函數(shù)SKIPIF1<0的零點(diǎn)為SKIPIF1<0，則SKIPIF1<0（

）A．SKIPIF1<0 B．SKIPIF1<0 C．SKIPIF1<0 D．SKIPIF1<02．已知函數(shù)SKIPIF1<0，則函數(shù)SKIPIF1<0零點(diǎn)個(gè)數(shù)為（

）A．0 B．1 C．2 D．33．已知函數(shù)SKIPIF1<0，若函數(shù)SKIPIF1<0有兩個(gè)不同的零點(diǎn)，則實(shí)數(shù)SKIPIF1<0的取值范圍是（

）A．SKIPIF1<0 B．SKIPIF1<0C．SKIPIF1<0 D．SKIPIF1<04．已知函數(shù)SKIPIF1<0，且f（x）在[0，SKIPIF1<0]有且僅有3個(gè)零點(diǎn)，則SKIPIF1<0的取值范圍是（

）A．[SKIPIF1<0，SKIPIF1<0） B．[SKIPIF1<0，SKIPIF1<0） C．[SKIPIF1<0，SKIPIF1<0） D．[SKIPIF1<0，SKIPIF1<0）5．已知函數(shù)SKIPIF1<0，SKIPIF1<0，SKIPIF1<0的零點(diǎn)分別為SKIPIF1<0、SKIPIF1<0、SKIPIF1<0，則SKIPIF1<0、SKIPIF1<0、SKIPIF1<0的大小順序?yàn)椋?/p>

）A．SKIPIF1<0 B．SKIPIF1<0C．SKIPIF1<0 D．SKIPIF1<06．已知直線SKIPIF1<0與函數(shù)SKIPIF1<0的圖象恰有SKIPIF1<0個(gè)公共點(diǎn)，則實(shí)數(shù)SKIPIF1<0的取值范圍是（

）A．SKIPIF1<0 B．SKIPIF1<0 C．SKIPIF1<0 D．SKIPIF1<07．設(shè)函數(shù)SKIPIF1<0有5個(gè)不同的零點(diǎn)，則正實(shí)數(shù)SKIPIF1<0的取值范圍為（

）A．SKIPIF1<0 B．SKIPIF1<0 C．SKIPIF1<0 D．SKIPIF1<08．已知函數(shù)SKIPIF1<0若SKIPIF1<0，SKIPIF1<0，SKIPIF1<0，且SKIPIF1<0僅有1個(gè)零點(diǎn)，則實(shí)數(shù)m的取值范圍為（

）A．SKIPIF1<0 B．SKIPIF1<0 C．SKIPIF1<0 D．SKIPIF1<0二、多選題9．下列函數(shù)有兩個(gè)零點(diǎn)的有（

）A．SKIPIF1<0 B．SKIPIF1<0C．SKIPIF1<0 D．SKIPIF1<010．已知函數(shù)f（x）是定義在R上的偶函數(shù)，且當(dāng)x>0時(shí)，f（x）SKIPIF1<0，m∈R，那么函數(shù)g（x）=f（x）﹣2在定義域內(nèi)的零點(diǎn)個(gè)數(shù)可能是（

）A．2 B．4 C．6 D．811．已知函數(shù)SKIPIF1<0，ω>0．若函數(shù)SKIPIF1<0在SKIPIF1<0上恰有2個(gè)零點(diǎn)，則ω的可能值是（

）A．SKIPIF1<0 B．SKIPIF1<0 C．SKIPIF1<0 D．SKIPIF1<012．已知函數(shù)SKIPIF1<0(SKIPIF1<0為正整數(shù))，則下列判斷正確的有（

）A．對于任意的正整數(shù)SKIPIF1<0，SKIPIF1<0為奇函數(shù)B．存在正整數(shù)SKIPIF1<0，SKIPIF1<0的圖像關(guān)于SKIPIF1<0軸對稱C．當(dāng)SKIPIF1<0為奇數(shù)時(shí)，SKIPIF1<0有四個(gè)零點(diǎn)D．當(dāng)SKIPIF1<0為偶數(shù)時(shí)，SKIPIF1<0有兩個(gè)零點(diǎn)三、填空題13．函數(shù)SKIPIF1<0的圖象在區(qū)間（0,2）上連續(xù)不斷，能說明“若SKIPIF1<0在區(qū)間（0,2）上存在零點(diǎn)，則SKIPIF1<0”為假命題的一個(gè)函數(shù)SKIPIF1<0的解析式可以為SKIPIF1<0=___________.14．函數(shù)SKIPIF1<0有三個(gè)不同的零點(diǎn)，則實(shí)數(shù)t的范圍是__________.15．已知函數(shù)SKIPIF1<0.若函數(shù)SKIPIF1<0有兩個(gè)不同的零點(diǎn)，則實(shí)數(shù)SKIPIF1<0的取值范圍是___________.16．已知SKIPIF1<0是定義在R上的奇函數(shù)，