00:01
The directions in this is that they define f of x as sine of x, which is the same thing as y equals sign of x.
00:13
But what they want you to do is to inverse sign both sides, number sign of y, is equal to just x because the inverse of sine will cancel.
00:29
And what they want you to do is figure out what d, y, d, d, x is.
00:33
Because by doing the problem this way, what you're actually doing is finding out, well, what the inverse is derivative is at that new x coordinate.
00:46
So the whole thought process, if i go back to it, is, well, maybe what i should have done is switch x and y around.
01:06
And they're asking for this derivative, and, you know, maybe i should do the problem this way.
01:17
But here we go.
01:19
Because at this point, you would say, ok, the derivative of x is 1.
01:22
And the derivative of sine is cosine.
01:28
And at this point, you might just say, oops, d, y, d, x...