Question

Is `y = 3^x` an exponential function?

Answer 1

Yes - it is in the form `y = a^x` with `a > 1` so it is an exponentially growing function.

Explanation:

The term "the exponential function" is used of `e^x`, but any function `f(x) = a^x` with `a > 0` and `a != 1` is an exponential function.

If `k = log_e(a)` then `a^x = e^(kx)`