00:01
For this, problem we are to differentiate k of x, which is equal to the product of x minus 1, negative x squared minus 2x, and 2x minus 2, using the product rule.
00:10
Now, in product rule, if we have y equals f times g, then the derivative y prime is equal to f prime times g plus f g prime.
00:25
So what are we going to do here since we have three factors, we will group this into two.
00:33
Say this is our first group.
00:35
Let's call this our f.
00:36
And this will be our function g.
00:41
Then by product rule, k prime of x is equal to the derivative with respect to x of x minus 1 times negative x squared minus 2x.
00:54
And then times 2x minus 2, plus we have x minus 1 times negative x squared minus 2x...