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歡迎您訪問數(shù)學考題練習:如果點P(2m+1,-2)在第四象限內,則m的!

數(shù)學考題練習:如果點P(2m+1,-2)在第四象限內,則m的

更新時間:2024-01-12 14:08:13作者:貝語網(wǎng)校

如果點P(2m+1,-2)在第四象限內,則m的取值范圍是

A.m>

B.m<

C.m≥

D.m≤

試題答案

A

試題解析

根據(jù)第四象限內點的特點列出不等式,計算即可得解.

解答:∵點P(2m+1,-2)在第四象限內,

∴2m+1>0,

解得m>-.

故選A.

點評:本題考查了點的坐標,記住各象限內點的坐標的符號是解決的關鍵,四個象限的符號特點分別是:第一象限(+,+);第二象限(-,+);第三象限(-,-);第四象限(+,-).

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