解由函數(shù)f(x)=log1/2(x2-mx-m)的定義域?yàn)镽
知x^2-mx-m>0恒成立
即Δ<0
即(-m)^2-4(-m)<0
即m^2+4m<0
即解得-4<m<0
已知函數(shù)f(x)=log1/2(x2-mx-m),函數(shù)f(x)的定義域?yàn)镽,求實(shí)數(shù)m的取值范圍
已知函數(shù)f(x)=log1/2(x2-mx-m),函數(shù)f(x)的定義域?yàn)镽,求實(shí)數(shù)m的取值范圍
數(shù)學(xué)人氣:439 ℃時(shí)間:2019-08-19 10:54:13
優(yōu)質(zhì)解答
我來(lái)回答
類(lèi)似推薦
- 已知函數(shù)f(x)=log1/2(x^2-mx+1)的定義域?yàn)镽,求實(shí)數(shù)m的取值范圍
- 函數(shù)f(x)= log1/2(x2-2ax+3),1.若函數(shù)的定義域?yàn)?-∞,1)∪(3,+∞),求實(shí)數(shù)a的值;...
- 已知函數(shù)f(x)=log1/2(x^2-mx-m) (1)若m=1,求函數(shù)f(x)的定義域 (2)若函數(shù)f(x)的值域?yàn)镽,求實(shí)數(shù)m的取
- 函數(shù)f(x)=(1/3)^x,其反函數(shù)為g(x)=log1/3x,(1)若g(mx^2+2x+1)的定義域?yàn)镽,求實(shí)數(shù)R的取值范圍(2)當(dāng)x∈[-1,1]時(shí),求函數(shù)y=[f(x)]^2-2af(x)+3的最小值h(a)
- 對(duì)于函數(shù)fx=log1/2(x*2-2ax+3)若函數(shù)定義域?yàn)镽,求實(shí)數(shù)a的取值范圍
- 函數(shù)f(x)=sinx-cosx^2的最小值是?
- 英語(yǔ)翻譯
- I took my grandpa to the hospital this morning,_____ I missed the first class.
- So crazy
- 方差是各個(gè)數(shù)據(jù)與平均數(shù)之差的平方的平均數(shù)
- 函數(shù)y=f(x)與它反函數(shù)y=f^-1(x)怎么讀?
- These are photos of my families.Look at them 改錯(cuò)
猜你喜歡
- 1平面與平面重合,是否屬于平行一類(lèi)?那重合的兩直線,也屬于平行一類(lèi)的嗎?
- 2非洲每年因饑餓死亡的人數(shù)及現(xiàn)在饑餓人口數(shù)量拜托各位了 3Q
- 3decide to do sth.還=什么
- 4(7/8)o you think of london?B:5.____london is one of the liveliest cities
- 5啤酒可以托運(yùn)嗎
- 6邊長(zhǎng)為2√6的等邊三角形的中心到一邊的距離為?
- 7please give your hand to help me
- 8已知2的X次方等于3的Y次方等于6的Z次方不等等于1,證明X分之一加Y分之一等于Z分之一.
- 9幫我做做?
- 10機(jī)械分析天平TG628A的使用說(shuō)明書(shū)
- 11in winter ,we wear warm coats to protect our bodies_.
- 12( )was most importance to her ,she told me,was her family it this what as