Question

What is the domain of the step function f(x) = [2x] – 1?

O {x{ x2-1}
O x x 1}
O {xl x is an integer}
O xl x is a real number}

Answer 1

d all real numbers......:)

Answer 2

You have troubles with domains only if you have:

• Denominators
• Roots with an even degree
• Logarithms

In this case, you have neither of these three, so you can compute your function wherever you want. The domain is all real numbers.