Question

What is the domain of f(x) = 2^x?

- All integers
-All real numbers
-x>_0
- x<_0

Answer 1

Answer: All real numbers

Step-by-step explanation:

We can replace x with any real number to get some output for y = f(x)

Examples:

• f(3) = 2^3 = 8
• f(4.5) = 2^(4.5) = 22.6274 approximately
• f(-7) = 2^(-7) = 0.0078125 exactly