SOLUTION: Which numbers cannot be used in place of the variable in the rational expression? 3x/x^2+1

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Question 402239: Which numbers cannot be used in place of the variable in the rational expression?

3x/x^2+1
Answer by solver91311(24713) About Me  (Show Source):
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That depends.

Did you mean:



or



In the first case the domain is all real numbers. In the second case the domain is all real numbers excluding zero.

John

My calculator said it, I believe it, that settles it
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