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歡迎您訪問數學考題練習:解不等式組,并寫出它的所有整數解.!

數學考題練習:解不等式組,并寫出它的所有整數解.

更新時間:2024-01-12 16:33:20作者:貝語網校

解不等式組,并寫出它的所有整數解.

試題答案

解:,

解不等式①得x≥-2.

解不等式②得x<1.(2分)

所以原不等式組的解集為-2≤x<1.(4分)

所以原不等式組的整數解為:-2,-1,0.(6分)

試題解析

分別求出各不等式的解集,再求出其公共解集即為此不等式組的解集,在此解集范圍內得出符合條件的x的整數值即可.

點評:本題考查的是解一元一次不等式組,其簡便求法就是用口訣求解,求不等式組解集的口訣:同大取大,同小取小,大小小大中間找,大大小小找不到(無解).

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