題目列表(包括答案和解析)
對于函數(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);② f(x1·x2)=f(x1)+f(x2)③>0;
④.當(dāng)f(x)=lgx時(shí),上述結(jié)論中正確結(jié)論的序號是 .
對于函數(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>0;
④f()<.
當(dāng)f(x)=10x時(shí),上述結(jié)論中正確結(jié)論的序號是________.
對于函數(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)論的序號是________(寫出全部正確結(jié)論的序號)
對于函數(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);
③>0;
④f()<.
當(dāng)f(x)=2x時(shí),上述正確結(jié)論的序號是________.
對于函數(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);
③>0;
④f()<.
當(dāng)f(x)=2x時(shí),上述正確結(jié)論的序號是________.
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