Ask Singapore Homework?

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



Question

secondary 3 | A Maths
One Answer Below

Anyone can contribute an answer, even non-tutors.

Answer This Question
trish
Trish

secondary 3 chevron_right A Maths chevron_right Singapore

hi! i need help for part (iii), thank you

Date Posted: 4 years ago
Views: 274

See 1 Answer

done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
Eric Nicholas K
Eric Nicholas K's answer
5997 answers (Tutor Details)
1st
Something like this would be good. We pretend h = 100 first.

To see afterwards for the regions where h >= 100, we do a visual sketch of the graph to help us.

Or, you can randomly substitute numbers not equaling to the two values of t found earlier to see whether h is more than or less than 100 before determining the inequality signs.
trish
Trish
4 years ago
oh i see, thank you so much for the detailed explanation! :)