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December 19, 2014

December 19, 2014

Posted by **Maura** on Tuesday, February 5, 2013 at 10:54pm.

F(x)= 2x^2-x-3 / x^2 +9

A) F(x) is a polynomial, so it is continuous at every number in its domain.

B) F(x) is a rational function, so it is continuous at every number in its domain.

C) F(x) is a composition of functions that are continuous for all real numbers, so it is continuous at every number in its domain.

D) F(x) is not continuous at every number in its domain.

E) none of these

State the domain. (Enter your answer using interval notation.)

- Calculus -
**Reiny**, Tuesday, February 5, 2013 at 11:45pmThe numerator is defined for every value of x you choose,

the denominator is always positive, so there is no danger of us dividing by zero, which would have caused a discontinuity.

so continuous for all values of x

B)

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