Ng Ming Bing's answer to May Chua's Secondary 4 E Maths Singapore question.
done
{{ upvoteCount }} Upvotes
clear
{{ downvoteCount * -1 }} Downvotes
f'(x) is equation of 1st derivative, ie the equation of the gradient of f(x). If f'(x)=0, it means gradient of f(x) =0 which also means the root of the equation of f'(x)
Recall discriminant b^2-4ac >0 means 2 real and distinct roots
also recall sum and product of roots for part ii and iii
Recall discriminant b^2-4ac >0 means 2 real and distinct roots
also recall sum and product of roots for part ii and iii
Date Posted:
5 years ago
360 Tutoring Program