00:02
Okay, so determine whether the equation represents continuous growth, decay, or neither.
00:07
And we have y is equal to 2 .5e to the negative 2t, and we're supposed to figure out what's happening to the actual graph.
00:17
So let's get a whiteboard, and i forgot, was it y is equal to 2 .25, i think, e to the negative 2t.
00:29
I got to double check.
00:31
2 .25 and 2e to the negative 2t.
00:37
Yep, got that.
00:41
All right, so we're trying to figure out if this is increasing or decreasing or neither.
00:45
The way to do that is actually pretty simple.
00:47
So remember, this is just the outside number.
00:49
It's the number that's being multiplied after you figure out the rate, essentially, like if this is increasing or decreasing.
00:57
And this is going to tell us, like i said, just a few seconds ago, this is basically the part that's telling us, is the final answer going to be bigger or smaller than the original? now we have e, right? the base being greater than one.
01:11
E is 2 .7 something, 2 .71, you know, so on.
01:15
It is greater than one, essentially.
01:17
So you know that it's two to some power...