Answer:
domain = real numbers, range = positive real numbers
Explanation:
f(x) = a^x
Domain is the set of all real numbers whose values are defined.
Here x is the exponent. There is no restriction for x
So x can take any value. x can be positive or negative
Hence, domain is all real numbers.
For range we consider the value of f(x)
For positive x values , f(x) will be positive
For negative x values , f(x) will be positive
so , range is positive real numbers