x Turn on thread page Beta
 You are Here: Home >< Maths

# STEP question watch

1. Hi, I'm just trying a STEP paper and came across a question that I really want to have a good go at but after staring at for half an hour haven't got a faintest clue where to start..

please don't give the answer, as I could just look that up, but give me that first little hint as to which direction I should be taking the Q.. thanks!

spoiler hints are welcome

Question:

Show that , where is a constant, satisfies the differential equation

I doubt you can use the same method of solving second order differentials as taught in FP1, and I've tried differentiating the given function but the inverse sin is making it difficult... am I missing something?

Appreciate the help
2. It's a reasonably tough question if it's the one I think it is (there are several very similar). You can solve the equation, but you need to make a substitution, and it isn't required for this question.

Remember this question can use material from any of the pure modules (ie if you don't know how to differentiate inverse sine, you either need to work it out, look it up, or give up on the question.
3. alright thanks, I've gotten past the differentiating inverse sin barrier, so I'll see how it goes.

Turn on thread page Beta
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:
Updated: November 12, 2008
Today on TSR

### Loughborough better than Cambridge

Loughborough at number one

Poll
Useful resources

## Make your revision easier

### Maths Forum posting guidelines

Not sure where to post? Read the updated guidelines here

### How to use LaTex

Writing equations the easy way

### Study habits of A* students

Top tips from students who have already aced their exams

Can you help? Study help unanswered threads

## Groups associated with this forum:

View associated groups

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE