Answer:
True
Step-by-step explanation:
Given statement : The base of an exponential function cannot be a negative number.
We need to check whether the given statement is true or not.
The general form of an exponential function is

where, a is the initial value and b is the base of exponential function.
The value of base b is always greater than 0 because
1. The terms like
is an imaginary number and it make no sense. So, the base of an exponential function cannot be a negative number.
2. It b=0, then
, which is a constant function. So, the base of an exponential function cannot be 0.
It means b>0.
Therefore, the given the given statement is true.