00:01
Corner series representation of e to the 5x.
00:03
Let's take continuous derivatives.
00:04
We have f prime of x is equal to 5e to 5x per chain rule.
00:08
And if we continue on like this here, we're going to get 10, e, 25, e to the 5x, 125, e to the 5x, and so on.
00:18
And so when we plug in 0, we get 1, then 5, 25, then 125, and so on.
00:25
Okay, so then when we plug that in, we get 1 plus 5x, plus 25x squared over 2 factorial, plus 125x cubed over 3 factorial here.
00:43
And so then that's what will continue being here.
00:51
So this is just 5 squared, 5 to the 3rd, and so on.
00:55
So our summation is going to be from 5, 5 to the n, x to the n, over n factorial...