Asked by Silvia Gopalakrishnan on Apr 29, 2024

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Find the domain of the rational function. h(x) =6xx2+4h ( x ) = \frac { 6 x } { x ^ { 2 } + 4 }h(x) =x2+46x

A) (−∞,−2) ∪(−2,2) ∪(2,∞) ( - \infty , - 2 ) \cup ( - 2,2 ) \cup ( 2 , \infty ) (,2) (2,2) (2,)
B) (−∞,∞) ( - \infty , \infty ) (,)
C) (−∞,6) ∪(6,∞) ( - \infty , 6 ) \cup ( 6 , \infty ) (,6) (6,)
D) (−∞,2) ∪(2,6) ∪(6,∞) ( - \infty , 2 ) \cup ( 2,6 ) \cup ( 6 , \infty ) (,2) (2,6) (6,)
E) (−∞,0) ∪(0,∞) ( - \infty , 0 ) \cup ( 0 , \infty ) (,0) (0,)

Domain

The set of all possible input values for which a function is defined.

Rational Function

A function represented by the quotient of two polynomials, where the denominator is not zero.

  • Recognize and characterize the domain of rational functions.
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KR
kimberly RubioMay 03, 2024
Final Answer :
B
Explanation :
The denominator x2+4x^2 + 4x2+4 is never zero for any real value of xxx , because x2x^2x2 is always non-negative, making x2+4>0x^2 + 4 > 0x2+4>0 for all real xxx . Therefore, the domain is all real numbers.