已知函數(shù)f(x)滿足f(2x-3)=x2-x+2 求f(x)
已知函數(shù)f(x)滿足f(2x-3)=x2-x+2 求f(x)
已知一次函數(shù)f(x)滿足f【f(x)】=4x+3 求f(x)
已知一次函數(shù)f(x)滿足f【f(x)】=4x+3 求f(x)
數(shù)學(xué)人氣:324 ℃時(shí)間:2020-02-05 09:47:07
優(yōu)質(zhì)解答
1.因?yàn)閒(2x-3)=x²-x+2采用換元法設(shè)t=2x-3則x=(t+3)/2,代入f(2x-3)=x²-x+2,有:f(t)=(t+3)²/4-(t+3)/2+2=t²/4+t+11/4∴f(x)=x²/4+x+11/42.:∵ f(x)是一次函數(shù) ∴ 設(shè) f(x)=kx+b∴ f[f(x...
我來(lái)回答
類(lèi)似推薦
- 已知函數(shù)f(x)=(x2+2x+a)/x,x∈〔1,+∞)(1)當(dāng)A=1/2時(shí),求函數(shù)f(x)的最小值(2) 若對(duì)任意x∈1,+∞),f(x)>0恒成立,試求實(shí)數(shù)a的取值范圍
- 已知函數(shù)f(x)=(2x-a)/(x2+2)
- 已知函數(shù)F(X)=2(x2-2x+3)
- 已知函數(shù)f(x)=8+2x-x2,如果g(x)=f( 2-x2 ),那么函數(shù)g(x) ( )
- 已知函數(shù)f(x)=(x2+2x+3)/x,x∈[2,+∞),
- 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