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歡迎您訪問數學考題練習:適合不等式-<x<π的整數解的個數是!

數學考題練習:適合不等式-<x<π的整數解的個數是

更新時間:2024-01-12 14:03:04作者:貝語網校

適合不等式-<x<π的整數解的個數是

A.5

B.6

C.7

D.8

試題答案

B

試題解析

先確定出-及π的近似值,再根據x的取值范圍求出符合條件的x的整數解即可.

解答:∵4<5<9,

∴<<,

即2<<3,

∴-3<-<-2,

∵π≈3.14,

∴x的整數解為-2,-1,0,1,2,3共六個.

故選B.

點評:此題主要考查了估算無理數的大小,比較簡單,解答此題的關鍵是先判斷出-及π的取值范圍,根據其取值范圍即可求出符合條件的x的值.

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