先將原不等式變形
x^2 -8x +16 >a (4-x)
a(4-x) < (4-x)^2
a) 當(dāng) 4-x >0,即x5或X
若|a|0 恒成立的充分條件,求實(shí)數(shù)x的取值范圍
若|a|0 恒成立的充分條件,求實(shí)數(shù)x的取值范圍
..
..
數(shù)學(xué)人氣：764 ℃時(shí)間：2020-04-03 22:32:40
優(yōu)質(zhì)解答
我來回答
類似推薦
- 已知不等式(a^2+4a-5)x^2+4(a-1)x+3>0對一切實(shí)數(shù)x恒成立,求實(shí)數(shù)a的取值范圍
- 已知（m2+4m-5）x2-4（m-1）x+3＞0對一切實(shí)數(shù)x恒成立，求實(shí)數(shù)m的范圍．
- 若不等式x2-logmx＜0在（0，1/2）內(nèi)恒成立，則實(shí)數(shù)m的取值范圍為_．
- 不等式x2
- 若不等式x^2-logm(x)＜0在(0,1/2)內(nèi)恒成立,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?那重合的兩直線,也屬于平行一類的嗎?
- 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的使用說明書
- 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