Ask Singapore Homework?

Upload a photo of a Singapore homework and someone will email you the solution for free.



Question

secondary 3 | A Maths
2 Answers Below

Anyone can contribute an answer, even non-tutors.

Answer This Question
Koh Yun Zhen
Koh Yun Zhen

secondary 3 chevron_right A Maths

The qns is 16(ii)

Date Posted: 7 years ago
Views: 510

See 2 Answers

done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
Bryant Lam Hong Sheng
Bryant Lam Hong Sheng's answer
97 answers (Tutor Details)
1st
Done
done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
Eugene See
Eugene See's answer
309 answers (Tutor Details)
The way you find D is wrong. c is (k - 3) and the coefficient of x is k, not (-3 + k).

Then we need to prove that D is more than or equal to 0 for all real values of k