Thread: Parametric Differentiation

Need help on question 6b) check attatchment i got 6a) correct but can someone please run me through hit feels like im just hitting a brick wall i also attatched the markscheme.

I think it would be better for you if you typed out one question, showed your attempted work on it, and then made another thread for the second question. As you can see, your attachment has multiple views but no replies. The easier it is to see and understand the problem the more likely it is to receive an answer.