f（x+1）=3（x+1）-7=3x-4
f（x+1）-f（x）=3（大于0）
所以它是增函數(shù).
證明函數(shù)f（x）=3x-7在R上是增函數(shù)
證明函數(shù)f（x）=3x-7在R上是增函數(shù)
數(shù)學人氣：305 ℃時間：2020-03-28 06:18:11
優(yōu)質解答
我來回答
類似推薦
- 證明函數(shù)f(x)=3x+2在R上是增函數(shù)
- 作出函數(shù)f（x）=-3x+4的圖象，并證明它是R上的減函數(shù)．
- ①證明函數(shù)f(x)=-2x+1在R上是減函數(shù).②證明函數(shù)f(x)=3x+2在R上是增函數(shù).
- 證明：函數(shù)F（x）=3x+2在（—∞,+∞）上是增函數(shù)
- 證明f(x)=3x+2為增函數(shù).
- 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
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