Ask Singapore Homework?

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



Question

secondary 4 | A Maths
One Answer Below

Anyone can contribute an answer, even non-tutors.

Answer This Question
Dunelm
Dunelm

secondary 4 chevron_right A Maths chevron_right Singapore

Need help with this question. Thank you.

Date Posted: 2 years ago
Views: 204

See 1 Answer

done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
Lim Jia Earn
Lim Jia Earn's answer
29 answers (A Helpful Person)
1st
-
Dunelm
Dunelm
2 years ago
Thank you.
Dunelm
Dunelm
2 years ago
Hi can I ask why is π/4 on top of π/2 for integration? Isn't π/2 should be at the top as it is from π/4 to π/2?
Lim Jia Earn
Lim Jia Earn
2 years ago
Because the area would be negative, by flipping the limits its essentially “making the area positive”. If you would like to integrate as normal (Having lower limit below and upper limit above), then just remember to modulus ;)
Dunelm
Dunelm
2 years ago
Ok Thank you.