14.對(duì)于函數(shù)f(x)定義域中任意的x1.x2(x1≠x2).有如下結(jié)論: 查看更多

 

題目列表(包括答案和解析)

對(duì)于函數(shù)f(x)定義域中任意的x1,x2x1x2),有如下結(jié)論:

 ①f(x1x2)=f(x1f(x2);② f(x1·x2)=f(x1)+f(x2)③>0;

.當(dāng)f(x)=lgx時(shí),上述結(jié)論中正確結(jié)論的序號(hào)是             .

查看答案和解析>>

對(duì)于函數(shù)f(x)定義域中任意的x1x2(x1x2),有如下結(jié)論:

f(x1x2)=f(x1f(x2);

f(x1·x2)=f(x1)+f(x2);

>0;

f()<

當(dāng)f(x)=10x時(shí),上述結(jié)論中正確結(jié)論的序號(hào)是________

查看答案和解析>>

對(duì)于函數(shù)f(x)定義域中任意的x1,x2(x1≠x2),有如下結(jié)論:

①f(x1+x2)=f(x1)·f(x2);

②f(x1·x2)=f(x1)+f(x2);

③(x1-x2)·[f(x1)-f(x2)]<0;

④f()<;

當(dāng)f(x)=2-x時(shí),上述結(jié)論中正確結(jié)論的序號(hào)是________(寫出全部正確結(jié)論的序號(hào))

查看答案和解析>>

對(duì)于函數(shù)f(x)定義域中任意的x1,x2,且x1≠x2,有如下結(jié)論:

①f(x1+x2)=f(x1)f(x2);

②f(x1+x2)=f(x1)+f(x2);

>0;

④f()<

當(dāng)f(x)=2x時(shí),上述正確結(jié)論的序號(hào)是________.

查看答案和解析>>

對(duì)于函數(shù)f(x)定義域中任意的x1,x2,且x1≠x2,有如下結(jié)論:

①f(x1+x2)=f(x1)f(x2);

②f(x1+x2)=f(x1)+f(x2);

>0;

④f()<

當(dāng)f(x)=2x時(shí),上述正確結(jié)論的序號(hào)是________.

查看答案和解析>>


同步練習(xí)冊(cè)答案