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```
A={(x,y):y=e 2x ​x=R}​ B={(x,y):y=e ​-2x x=R}​ ​1. . ​not a set 2.singleton set 3.empty set 4.none of these
A={(x,y):y=e2x ​x=R}​B={(x,y):y=e​-2xx=R}​  ​1..​not a set2.singleton set3.empty set 4.none of these

```
3 years ago

Arun
25768 Points
```							y=ex  here x can vary from - infinity to + infinity but y can be only positive number   so A = {R,positive number}   and for y =e-x  x can vary from - infinity to + infinity but y can be only positive number so B ={R,positive number} so A intersect B at only (0,1)Hence A intersection B is (0,1)Hence a singleton set
```
3 years ago
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