Hey! Sign in to get help with your study questionsNew here? Join for free to post
 You are Here: Home >< Maths

# Anyone out there help me out pls

Announcements Posted on
Last day to win £100 of Amazon vouchers - don't miss out! Take our quick survey to enter 24-10-2016
1. Got a question on an assignment that reads:
Find y as a function of x given that d^2y/dx^2 = 2x^2+6x-4, y =4 when x =1 and y=2 when x=-1.
Any help would be great.
2. (Original post by jmason1996)
Got a question on an assignment that reads:
Find y as a function of x given that d^2y/dx^2 = 2x^2+6x-4, y =4 when x =1 and y=2 when x=-1.
Any help would be great.
Integrate to get dy/dx and don't forget the constant (call it c, say) then integrate that to get y and get a new constant (call it k, say).

Now sub in the x and y values you have been given and solve simultaneously.

That's what I'd try.
3. (Original post by maggiehodgson)
Integrate to get dy/dx and don't forget the constant (call it c, say) then integrate that to get y and get a new constant (call it k, say).

Now sub in the x and y values you have been given and solve simultaneously.

That's what I'd try.
Okay thanks i'll give it a go now
4. (Original post by jmason1996)
Okay thanks i'll give it a go now
Did it work?

There's no need to answer this. I'm only posting this because I can't get rid of the orange notification sign at the top of my page and I thought that making a reply might help.
5. (Original post by maggiehodgson)
There's no need to answer this. I'm only posting this because I can't get rid of the orange notification sign at the top of my page and I thought that making a reply might help.
If it didn't work, then you can always press the "mark all as read" in the bottom left corner of the dropdown menu for notifications.
6. (Original post by Zacken)
If it didn't work, then you can always press the "mark all as read" in the bottom left corner of the dropdown menu for notifications.
Well, I never knew that. Thanks
7. Hi, I am really struggling with the whole thing actually haha. Integrating, the whole dx/dy thing. Can't get my head round it

Write a reply…

Submit reply

## Register

Thanks for posting! You just need to create an account in order to submit the post
1. this can't be left blank
that username has been taken, please choose another Forgotten your password?
2. this can't be left blank
this email is already registered. Forgotten your password?
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
your full birthday is required
1. Oops, you need to agree to our Ts&Cs to register
2. Slide to join now Processing…

Updated: May 31, 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

### How does exam reform affect you?

From GCSE to A level, it's all changing

Poll
Useful resources

## Make your revision easier

### 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

Can you help? Study help unanswered threads

## Groups associated with this forum:

View associated groups
Study resources

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

Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.