SOLUTION: For f(x)=2x/x-2 answer the following questions.
4. What is the domain of f?
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Question 1127142: For f(x)=2x/x-2 answer the following questions.
4. What is the domain of f?
Answer by greenestamps(13200) (Show Source): You can put this solution on YOUR website!
The domain of a function is the set of values of x for which the function can be evaluated.
For a rational function like this (a fraction with variables in the numerator and denominator), the domain is all values EXCEPT any that make the denominator 0, because division by 0 is not allowed.
For this function, the only value that makes the denominator 0 is x=2, so the domain of the function is all real numbers except 2.
In algebraic notation:
In interval notation: (-infinity, 2) U (2, infinity)
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