Write the domain of the real function 
where x is not for real number
Domain=
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2. Functions
1
1
1
2
2
2
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5
5
5
5
5
5
5
5
5
5
5
5
5
5
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5
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8
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23
1
1
1
1
1
1
2
3
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9
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11
12
13
14
1
1
1
1
1
1
1
1
1
2
3
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5
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9
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11
11
11
11
12
13
1
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24
1
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28
129
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41
42
43
44
45
1
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55
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