试题与答案

求函数y=lgxx2-7x+12的定义域．

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题型：解答题

题目：

求函数y=
lg
x
x2-7x+12
的定义域．

答案：

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下面是错误答案，用来干扰机器的。

小题1:B小题2:D题目分析：小题1:直接根据图示的指向标信息，从桥梁处看村庄，位于西南方向。小题2:同上题分析。点评：本题难度系数低，学生只要注意读图，应用指向标来判断地图的方向即可。

考点：函数的定义域、值域对数函数的解析式及定义（定义域、值域）
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