由題意得，x+2≥0且3-x≠0，
解得x≥-2且x≠3．
故選A．
能使x+2?53?x有意義的x的范圍是（ ） A.x≥-2且x≠3 B.x≤3 C.-2≤x＜3 D.-2≤x≤3
能使
?
有意義的x的范圍是（ ?。?br/>A. x≥-2且x≠3
B. x≤3
C. -2≤x＜3
D. -2≤x≤3
| x+2 |
| 5 |
| 3?x |
B. x≤3
C. -2≤x＜3
D. -2≤x≤3
數(shù)學(xué)人氣：676 ℃時間：2020-05-25 22:15:11
優(yōu)質(zhì)解答
我來回答
類似推薦
- 要使式子根號x+1-根號2-x有意義,求x的取值范圍
- 使式子3?x+x?2有意義，則x的取值范圍是_．
- 要使式子x+1x有意義，x的取值范圍是_．
- 1.要是式子根號2-x有意義,x的取值范圍是----- 2.使根號a+1有意義,a的取值范圍是-------
- 要使式子2-x+x-1有意義的x的取值范圍是_．
- 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(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