Question

What is the domain of the expression x + 1/x?

(A) All real numbers except for zero.
(B) All real numbers.
(C) All non-negative real numbers.
(D) All non-zero real numbers.

Answer 1

The domain of the expression x + 1/x is All non-zero real numbers.

Step-by-step explanation:

The domain of the expression x + 1/x is All non-zero real numbers. The expression consists of two terms, x and 1/x, and both of these terms are defined for all real numbers except for zero. Therefore, the domain of the expression is the set of all non-zero real numbers.