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(xué)考題練習(xí):若點(2,1)是反比例y=的圖象上一點,則m=!

數(shù)學(xué)考題練習(xí):若點(2,1)是反比例y=的圖象上一點,則m=

更新時間:2024-01-12 16:25:51作者:貝語網(wǎng)校

若點(2,1)是反比例y=的圖象上一點,則m=________.

試題答案

1或-3

試題解析

將點(2,1)代入反比例y=,列出關(guān)于m的一元二次方程,然后解方程即可.

解答:∵點(2,1)是反比例函數(shù)y=的圖象上一點,

∴點(2,1)滿足反比例函數(shù)的解析式y(tǒng)=,

∴1=,即m2+2m-3=0,

∴(m+3)(m-1)=0,

解得,m=-3或m=1.

故答案是:1或-3.

點評:本題考查了待定系數(shù)法求反比例函數(shù)的解析式.解答時,反比例函數(shù)圖象上點的坐標(biāo)特征,經(jīng)過函數(shù)的某點一定在函數(shù)的圖象上.

為您推薦

數(shù)學(xué)考題練習(xí):如圖,小亮同學(xué)在晚上由路燈A走向路燈B,當(dāng)他走

如圖,小亮同學(xué)在晚上由路燈A走向路燈B,當(dāng)他走到點P時,發(fā)現(xiàn)他的身影頂部正好接觸路燈B的底部,這時他離路燈A25米,離路燈B5米,如果小亮的身高為1.6米,那么路燈高度為A.6.4米B.8米C.9.6米D.11.2米

2024-01-12 16:25

數(shù)學(xué)考題練習(xí):拋物線y=ax2+bx+c交x軸于A,B兩點,

拋物線y=ax2+bx+c交x軸于A,B兩點,交y軸于點C,對稱軸為直線x=1.且A、C兩點的坐標(biāo)分別為A(-1,0),C(0,-3).(1)求拋物線y=ax2+bx+c的解析式;(2)在對稱軸上是否存在一個點P,使△PAC的周長最???若存

2024-01-12 16:25

數(shù)學(xué)考題練習(xí):如圖,正方形ABCD的面積為1,分別取AD,B

如圖,正方形ABCD的面積為1,分別取AD,BC兩邊的中點E,F(xiàn),則四邊形ABFE的面積為;再分別取EF,CD的中點G,H,則四邊形EGHD的面積為;再分別取GH,F(xiàn)C的中點,依次取下去….請你利用這一圖形,計算出:=________.

2024-01-12 16:25

數(shù)學(xué)考題練習(xí):某小區(qū)利用一塊空地修建一個長方形花壇,要使花壇

某小區(qū)利用一塊空地修建一個長方形花壇,要使花壇的長比寬多5m,且面積為24m2,長方形花壇的長和寬應(yīng)各是多少?

2024-01-12 16:25

數(shù)學(xué)考題練習(xí):某縣教育局在今年體育測試中,從某校初三(3)班

某縣教育局在今年體育測試中,從某校初三(3)班中抽取男、女學(xué)生各15人進(jìn)行三次體育成績復(fù)查測試,在這個問題中,下列敘述正確的是A.該校所有初三學(xué)生是總體B.所抽取的30名學(xué)生是樣本C.樣本容量是30D.樣本容量是15

2024-01-12 16:25

數(shù)學(xué)考題練習(xí):在有理數(shù)(-1)2、、-|-2|、(-2)3中

在有理數(shù)(-1)2、、-|-2|、(-2)3中負(fù)數(shù)有( )個.A.4B.3C.2D.1

2024-01-12 16:25

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