You are Here: Home >< Maths

How can I simplify this as much as possible?

Announcements Posted on
Why bother with a post grad course - waste of time? 17-10-2016
1. Hi, I came across this question in an admissions test quite some time ago and didn't get it. Can someone please explain how you could simplify this expression? Thanks!
2. (Original post by Glavien)
Hi, I came across this question in an admissions test quite some time ago and didn't get it. Can someone please explain how you could simplify this expression? Thanks!
The denominator looks like a geometric series with common ratio sin^2 x, so...?
3. (Original post by Glavien)
Hi, I came across this question in an admissions test quite some time ago and didn't get it. Can someone please explain how you could simplify this expression? Thanks!
Does the bottom remind you of anything?
4. (Original post by Zacken)
The denominator looks like a geometric series with common ratio sin^2 x, so...?
Umm, I can't work out the sum of the series as the number of terms is not given. So, could you just work out the sum to infinity?? I am not sure why you would want to do that though.
5. (Original post by Glavien)
Umm, I can't work out the sum of the series as the number of terms is not given. So, could you just work out the sum to infinity?? I am not sure why you would want to do that though.
Because there are an infinite number of terms, hence the . Had it been , then that is n terms. But because it is just 3 dots, it means there are an infinite number of them.
6. (Original post by Zacken)
Because there are an infinite number of terms, hence the . Had it been , then that is n terms. But because it is just 3 dots, it means there are an infinite number of them.
So, you work out the sum to infinity them simplify to get ?
7. (Original post by Glavien)
So, you work out the sum to infinity them simplify to get ?
Yeah, looks right.
8. (Original post by Zacken)
Yeah, looks right.
Thanks, your help is really appreciated!
9. (Original post by Glavien)
Thanks, your help is really appreciated!
No worries. :-)

Register

Thanks for posting! You just need to create an account in order to submit the post
1. this can't be left blank
2. this can't be left blank
3. this can't be left blank

6 characters or longer with both numbers and letters is safer

4. this can't be left empty
1. Oops, you need to agree to our Ts&Cs to register

Updated: April 30, 2016
TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

This forum is supported by:
Today on TSR

A level maths

Which modules should I take?

Poll
Useful resources

Maths Forum posting guidelines

Not sure where to post? Read here first

How to use LaTex

Writing equations the easy way

Study habits of A* students

Top tips from students who have already aced their exams

Chat with other maths applicants