Find the domain of the function.
-$$f ( x ) = x ^ { 2 } + 1$$
A) $( \infty , \infty )$
B) $( \infty , - 1 )$ or $( - 1 , \infty )$
C) $[ - 1 , \infty )$
D) $( - 1 , \infty )$

Question

Quizplus · Accepted Answer

The function $f(x) = x^2 + 1$ is a polynomial function, which is defined for all real numbers. Therefore, its domain is all real numbers, which is represented by $(-\infty, \infty)$.

Find the Domain of the Function f(x)=x2+1f ( x ) = x ^ { 2 } + 1f(x)=x2+1

Find the Domain of the Function $f ( x ) = x ^ { 2 } + 1$