试题与答案

当______时,x+1x在实数范围内有意义.

题型:填空题

题目:

当______时,
x+1
x
在实数范围内有意义.

答案:

依题意有x+1≥0,x≠0,

解得x≥-1且x≠0,

故x≥-1且x≠0时,

x+1
x
在实数范围内有意义.

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