Question

Find the domain of the function f(x)=12x+3. what is the only value of x x not in the domain?

Answer 1

The domain of that function is all real numbers because it's a line.

Answer 2

The function given to us is
`f(x)=12x+3`. As we can see this is a linear function and thus, it function will have no value of
`x` such that the function is undefined there. Therefore, the given function's domain will be the set of all real numbers. In other words, this can be written as:

Domain of f(x): \mathbb{R}

Thus, D:\left \{ x:x\in \mathbb{R} \right \}

where symbols have their usual meanings.