Asked by Silvia Gopalakrishnan on Apr 29, 2024
Verified
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.
Verified Answer
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.
Learning Objectives
- Recognize and characterize the domain of rational functions.