You may imply thinking of derivatives as applying L'Hopital's rule.
Hey guys,
I've got a big test on friday and I was working out a past paper.
I would appreciate it if you could show all the steps.
The question is as follows:
There is a tip saying: "Think of a derivative".
And the memo only says:
I have no idea how they got that answer.
Thanks in advance.
Well there are many ways.
I suppose that
Right?
That might suggest applying L'Hôpital's rule .
Another Idea would be: for all reals except for 0
So:
Or you can consider the change of variable so