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adell [148]
3 years ago
12

What is the functions domain ?

Mathematics
1 answer:
Jobisdone [24]3 years ago
6 0
f(x)=x+5;\ y\in\{7;\ 9\}\\\\x+5=7\ \ \ |-5\\x=2\\\\x+5=9\ \ \ |-5\\x=4\\\\\text{The domain is:}\ \{2;\ 4\}
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