Ask Singapore Homework?

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



Question

junior college 1 | H2 Maths
2 Answers Below

Anyone can contribute an answer, even non-tutors.

Answer This Question
chloe
Chloe

junior college 1 chevron_right H2 Maths chevron_right Singapore

hi! pls help me!

Date Posted: 2 years ago
Views: 578

See 2 Answers

done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
Eric Nicholas K
Eric Nicholas K's answer
5997 answers (Tutor Details)
1st
Q2a
done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
Eric Nicholas K
Eric Nicholas K's answer
5997 answers (Tutor Details)
Q2b

The second part of this question is done with the fact that one sequence shows a string of cubes of odd numbers and the other shows a string of cubes of even numbers.

An alternative method is to expand (2r - 1)^3 out and then using the results for the summation of n^2 and n^3 as given in both parts.

If you need me to write up this alternative method, let me know.