00:01
Okay, so a given function here is f of x is equal to e to the negative x squared.
00:07
So to find the mclaurin polynomials of orders 1, 2, 3, and 4, well, we first just evaluate the function at 0.
00:16
So f of 0 is just equal to, well, e to the negative 0 is just e to the 0, which is equal to 1.
00:23
So f of 0 is equal to 1.
00:25
Anything to the 0 power is equal to 1.
00:26
Okay, and then our first derivative is then going to be equal to 1.
00:31
By the chain rule, we get a negative 2x times e to the negative x squared.
00:37
And the first derivative at zero is again equal to zero.
00:40
The second derivative then is then going to be, well, 4x squared times e to the negative x squared minus 2 times e to the negative x squared.
00:53
By a product rule, train rule there.
00:56
And we get the second derivative then evaluated at zero is going to be equal to negative 2.
01:01
The third derivative then it becomes a negative 8x cubed times e to the negative x squared plus 12x times e to negative x squared...