Herman's answer to Jun's Secondary 4 A Maths Singapore question.

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Herman
Herman's answer
6 answers (A Helpful Person)
Part d using differentiation. Very tedious haha but this might be the actual way to do it since the method in my previous picture is very visual. My working is experimental so it might be messy sorry!
Herman
Herman
4 years ago
For 2nd derivative have to use product rule