Jeryn Lim's answer to Sher's Secondary 4 A Maths Singapore question.

done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
Jeryn Lim
Jeryn Lim's answer
14 answers (A Helpful Person)
1st
It is important to know that the gradient of a cubic curve is given by the differentiation of the cubic equation.