| 1 |
| 2 |
| 3 |
| 4 |
| 3 |
| 4 |
∴y=
| x2?x+1 |
| 2x2?2x+3 |
| t |
| 2t+1 |
| 1 | ||
2+
|
| 1 |
| 2 |
當(dāng)t=
| 3 |
| 4 |
| 1 |
| t |
| 1 | ||
2+
|
| 3 |
| 10 |
故y=
| x2?x+1 |
| 2x2?2x+3 |
| 3 |
| 10 |
| 1 |
| 2 |
故答案為：[
| 3 |
| 10 |
| 1 |
| 2 |
y=x2?x+12x2?2x+3的值域?yàn)開．
y=
的值域?yàn)開_____．
| x2?x+1 |
| 2x2?2x+3 |
數(shù)學(xué)人氣：554 ℃時(shí)間：2020-06-02 08:26:32
優(yōu)質(zhì)解答
設(shè)x2-x+1=t，（x-
）2+
=t故t≥
∴y=
=
=
＜
，
當(dāng)t=
時(shí)
最大，則y最小，最小值y=
=
，
故y=
的值域?yàn)閇
，
）．
故答案為：[
，
）．
∴y=
當(dāng)t=
故y=
故答案為：[
我來回答
類似推薦
- y=1/（x²+2x+3）的值域時(shí)什么具體一點(diǎn)
- y=x²-2x-1,x∈(-1,3),求值域
- y=x²-2x+3求值域
- 求值域①y=1/(1+x²) ②y=1/(x²-x+1) ③y=(2x-1)/(x+3)
- 求y=(x+1)/(2x)的值域,求y=2x²+4x-3的值域
- 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(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