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歡迎您訪問數(shù)學(xué)考題練習(xí):點(diǎn)A(m,n)滿足mn=0,則點(diǎn)A在 上.!

數(shù)學(xué)考題練習(xí):點(diǎn)A(m,n)滿足mn=0,則點(diǎn)A在 上.

更新時(shí)間:2024-01-12 14:01:38作者:貝語網(wǎng)校

點(diǎn)A(m,n)滿足mn=0,則點(diǎn)A在           上.

A.原點(diǎn)

B.坐標(biāo)軸

C.x軸

D.y軸

試題答案

B

試題解析

應(yīng)先判斷出所求的點(diǎn)的橫縱坐標(biāo)的可能值,進(jìn)而判斷點(diǎn)所在的位置.

解答:∵點(diǎn)A(m,n)滿足mn=0,

∴m=0或n=0,

∴點(diǎn)A在x軸或y軸上.即點(diǎn)在坐標(biāo)軸上.

故選B.

點(diǎn)評:本題主要考查了平面直角坐標(biāo)系中點(diǎn)在坐標(biāo)軸上時(shí)點(diǎn)的坐標(biāo)的特點(diǎn):橫坐標(biāo)或縱坐標(biāo)為0.

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