What is the domain of f(x)=1/x?

a. all real numbers except 0
b. x=0
c. f(x) ≠0
d. all real numbers

A

Step-by-step explanation:

Given f(x) =

The denominator of f(x) cannot be zero as this would make f(x) undefined. Equating the denominator to zero and solving gives the value that x cannot be.

denominator : x = 0 ← excluded value

domain : x ∈ R, x≠ 0

since proposition states that a number is greater than 25, if is true then the number must actually be greater than 25.

this implies that all possible options, except 24, can be accepted