亚洲男人天堂av,国产一区二区久久精品,国产精品一区二区久久精品,国产精品久久久久久一区二区三区,五月婷婷在线观看视频,亚洲狠狠色丁香婷婷综合

歡迎您訪問數(shù)學考題練習:已知a與互為倒數(shù),則滿足條件的實數(shù)a的個數(shù)是!

數(shù)學考題練習:已知a與互為倒數(shù),則滿足條件的實數(shù)a的個數(shù)是

更新時間:2024-01-12 16:35:25作者:貝語網(wǎng)校

已知a與互為倒數(shù),則滿足條件的實數(shù)a的個數(shù)是

A.0

B.1

C.2

D.3

試題答案

C

試題解析

根據(jù)倒數(shù)定義,即兩個式子的積是1,列出方程求解即可.

解答:∵a與互為倒數(shù),

∴a×=1,

解得,a=2或a=-1.

故選C.

點評:倒數(shù)的定義:若兩個數(shù)的乘積是1,我們就稱這兩個數(shù)互為倒數(shù),求出a的值.

為您推薦

數(shù)學考題練習:已知四點A(1,2),B(2,0),C(-2,

已知四點A(1,2),B(2,0),C(-2,20),D(-1,12),則下列說法正確的是A.存在一個二次函數(shù)y=x2-5x+6,它的圖象同時經(jīng)過這四個點B.存在一個二次函數(shù)y=x2+2,它的圖象同時經(jīng)過這四個點C.存在一個二次函數(shù)y=-x

2024-01-12 16:35

數(shù)學考題練習:關(guān)于x的一元二次方程kx2-4x+1=0有兩個

關(guān)于x的一元二次方程kx2-4x+1=0有兩個不相等的實數(shù)根,則k的取值范圍是A.k>4B.k<4C.k<4且k≠0D.k≤4且k≠0

2024-01-12 16:35

數(shù)學考題練習:已知:如圖,E、F分別是正方形ABCD的邊BC

已知:如圖,E、F分別是正方形ABCD的邊BC、CD上的點,AE、AF分別與對角線BD相交于M、N,若∠EAF=50°,則∠CME+∠CNF=________度.

2024-01-12 16:35

數(shù)學考題練習:在配紫色游戲中,轉(zhuǎn)盤被平均分成“紅”、“黃”、

在配紫色游戲中,轉(zhuǎn)盤被平均分成“紅”、“黃”、“藍”、“白”四部分,轉(zhuǎn)動轉(zhuǎn)盤兩次,配成紫色的概率為A.B.C.D.

2024-01-12 16:35

數(shù)學考題練習:如圖所示,在△ABC中,DE∥BC,AD:DB

如圖所示,在△ABC中,DE∥BC,AD:DB=1:2,則下列結(jié)論中,正確的是A.=B.=C.=D.=

2024-01-12 16:35

數(shù)學考題練習:如圖在Rt△ABC中,∠C=90°,AC=5,

如圖在Rt△ABC中,∠C=90°,AC=5,AB=13,則tanB=________.

2024-01-12 16:35

加載中...
主站蜘蛛池模板: | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |