An exponential function's domain is always...

Question

all real numbers.

x<0.

y>0.

x>0.

Answer 1

The domain of an exponential function is always all real numbers. This is because you can input any real number into the exponent, and the exponential function will produce a valid output. For example, in the function \( f(x) = a^x \) (where \( a > 0 \)), you can substitute any real value for \( x \), resulting in a valid output.