## 1)why do we exclude 1 and -1 from the domain of the rational function: f(x)= 3/x^2-1 ? 2) Find the domain of the rational f

Question

1)why do we exclude 1 and -1 from the domain of the rational function: f(x)= 3/x^2-1 ?

2) Find the domain of the rational function. express as an interval. f(x)= 2x^2/x^2-x-6

3) Write a rational function for which 2 is not in the domain.

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Mathematics
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2021-07-22T23:25:20+00:00
2021-07-22T23:25:20+00:00 1 Answers
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## Answers ( )

1) we exclude 1 and -1 because it would no longer be to the power of a number, it would just become a normal number which is the power of 1.

2) domain is all real numbers

3) y=2x^2-x-6