hey, trying to do a question, but don't know how to differentiate factorials, how would u differentiate (x-2)! any help would be great thanks
im trying to find the derivative of cos x using the series
i worked out that each term could be given by
although now that i think about it, thats not going to help is it.
would it be possible just to differentiate each term ie becomes and repeat for each term, how would u state that you are assuming something is continuing though.