00:01
So our objective here is to get the equation of a tangent line at this particular x value for this function here.
00:10
And so let's first simplify what we have here.
00:16
So we're going to have y is equal to, dividing by 2x to each term here.
00:22
We have x squared over 2 plus 2x to the...
00:34
I'm going to do this.
00:35
Ah, i know how we do this.
00:36
So plus and a half here, so be one half x to the negative one power.
00:44
All right.
00:45
And so then right there we could take the derivatives, so we have y prime is equal two.
00:51
So that's going to be 2x over 2, minus 1 half x to the negative 2 power.
00:59
Right, because 1 half times negative 1, it's negative 1.
01:02
All right.
01:02
Now i'm going to plug in 1 in there.
01:04
So i have f prime of 1 is equal 2...