Makematics
Well-Known Member
product ruleI made the mistake of forgetting to quickly check with L'Hopital's on tuesday for mc 9, lost one mark.
THen I drilled into my head that I would definitely use L'Hopital's this time.
Next thing you know, I forget to put x^2 in differentiation a few parts later.
I never made a mistake in chain rule for a year until now. WTF.