You are Here: Home >< Maths

# Anyone out there help me out pls Watch

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

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: May 31, 2016
Today on TSR

### Is this person a genius?

...with these A Level results?

### I think I'm transgender AMA

Discussions on TSR

• Latest
• ## See more of what you like on The Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

• Poll
Useful resources

### 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

## Groups associated with this forum:

View associated groups
Discussions on TSR

• Latest
• ## See more of what you like on The Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

• 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.