下列结论中正确的序号是_1． ①函数y=ax（a＞0且a≠1）与函数 y=logaax （a＞0且a≠1）的定义域相同；②函数y=k•3x（k＞0）（k为常数）的图象可由函数y=3x的图象经过平移得

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下列结论中正确的序号是____．

①函数y=a^x（a＞0且a≠1）与函数 y=logaax （a＞0且a≠1）的定义域相同；

②函数y=k•3^x（k＞0）（k为常数）的图象可由函数y=3^x的图象经过平移得到；

③函数 y=

1

2

+−

1

2

x

1

（x≠0）是奇函数且函数 y=x(−

1

3

x

1

+

1

2

) （x≠0）是偶函数；

④若x₁是函数f（x）的零点，且m＜x₁＜n，则f（m）•f（n）＜0．

上一题下一题 0.0难度选择题更新时间:2017-01-17 06:21:30

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①②③

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