00:01
Okay, so we have this function f of x equals 3 to the x.
00:05
So we want to fill in some gaps.
00:07
So f of x is an exponential function, and the base is just the number we see here.
00:14
So the exponential function is just some number to the power x, and the base is this number.
00:20
So the base is 3.
00:21
Now we want to evaluate f at some values.
00:24
So f of minus 2 is 3 to the power of minus 2.
00:28
And when we have a negative power, we can always bring this underneath.
00:32
So like this, i make the power positive.
00:34
So this is the same as 1 over 3 squared.
00:37
And 3 squared is 9.
00:38
So this is 1 over 9...