00:01
So we need to find the inverse sign, sorry, the derivative of this equation, the y is equal to the inverse sign of 1 over x squared.
00:10
Now, what you are going to need to do, or at least know immediately, is the derivative of a sign.
00:24
So let's just, of an inverse sign.
00:26
So let's just do the derivative of the inverse sign of x over dx.
00:33
This is just going to be equal to 1 divided by the square root of 1 minus x squared.
00:40
So this is a fairly important formula.
00:44
It's not something you're going to be able to get naturally.
00:46
So make sure you know this before you do a question like this.
00:50
So in our case where we have y is equal to inverse sign of inverse...