Explanation
An exponential function has a variable in the exponent.
General form:
f(x) = a · bˣ
Where:
-
a = starting value
-
b = growth or decay factor
-
x = exponent
If b > 1 → exponential growth
If 0 < b < 1 → exponential decay
Examples:
f(x) = 2 · 3ˣ (growth)
f(x) = 5 · (1/2)ˣ (decay)