Wai Mun's answer to Kathy's Secondary 4 A Maths Singapore question.

done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
Wai Mun
Wai Mun's answer
128 answers (A Helpful Person)
1st
Hope this helps
Jiayang
Jiayang
4 years ago
I think you misread your own handwriting.
x³ not x² in the denominator of dy/dx.