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27 votes
27 votes
F(x) = 3x/x+7, what is the domain?

User Henry He
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1 Answer

7 votes
7 votes

Answer:

All real numbers except x=-7

Explanation:

Since
x=-7 is a discontinuity in the rational function, this makes the denominator equal to 0.

User Fabrice NEYRET
by
2.8k points