题目内容
(1)化简
+(
)-
-(0.01)-
-π0+(
-1)-1
(2)已知全集U={x|-5≤x≤3},A={x|-5≤x<-1},B={x|-1≤x<1},求?U(A∪B).
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(2)已知全集U={x|-5≤x≤3},A={x|-5≤x<-1},B={x|-1≤x<1},求?U(A∪B).
(1)
+(
)-
-(0.01)-
-π0+(
-1)-1
=[(
)2]
+[(
)3]-
-[(0.1)2]-
-1+
+1
=
+
-10+
=
-7;
(2)由A={x|-5≤x<-1},B={x|-1≤x<1},
所以A∪B=[-5,1).
又U={x|-5≤x≤3},
所以?U(A∪B)=[1,3].
|
| 27 |
| 64 |
| 1 |
| 3 |
| 1 |
| 2 |
| 2 |
=[(
| 5 |
| 3 |
| 1 |
| 2 |
| 3 |
| 4 |
| 1 |
| 3 |
| 1 |
| 2 |
| 2 |
=
| 5 |
| 3 |
| 4 |
| 3 |
| 2 |
=
| 2 |
(2)由A={x|-5≤x<-1},B={x|-1≤x<1},
所以A∪B=[-5,1).
又U={x|-5≤x≤3},
所以?U(A∪B)=[1,3].
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