Ask Singapore Homework?

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



Question

|
One Answer Below

Anyone can contribute an answer, even non-tutors.

Answer This Question
Star boy
Star Boy

Calculus chevron_right Maths calculus chevron_right China

Please help me to solve this question

Date Posted: 5 years ago
Views: 418

See 1 Answer

done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
Eric Nicholas K
Eric Nicholas K's answer
5997 answers (Tutor Details)
1st
I tried my best to come up with my solutions, but it may not be fully correct or understandable.

I have split the question into three cases and attempted to prove the three cases accordingly.

Hopefully this answer helps you.
Eric Nicholas K
Eric Nicholas K
5 years ago
In the case where x > 1, I try to show that the difference between x^a - ax can never be greater than 1 - a, so I pretend x^a - ax to be a curve having a turning maximum point with a maximum value of 1 - a.
Star boy
Star Boy
5 years ago
Thanks you really help me