You are Here: Home

# C4 Implicit functions

Announcements Posted on
International student planning UK study in 2016? Take our short survey and we’ll send you a £5 Amazon voucher 03-05-2016
Talking about ISA/EMPA specifics is against our guidelines - read more here 28-04-2016
1. Hi can someone show me where i am going wrong with these?

Find the gradient of the stated curve at the specified point.

2C) at the point

I differentiate to get:

I get on its own.

I sub the values in and get , however the answer in my book says it is .
2. Nvm yh I got same as you.
3. Book's wrong.
4. I won't lie I get the same as you. Are you sure that you have the right equation and point?

Book is wrong.
6. (Original post by 0range)
I think it should be -7y^2
What?

What?

lol nah its nothing i forgot to put a minus when doing the product rule on the -7xy^2
8. (Original post by 0range)
Nvm yh I got same as you.

(Original post by ghostwalker)
Book's wrong.

(Original post by miss katie)
I won't lie I get the same as you. Are you sure that you have the right equation and point?
Yeah, i doubled checked the question, i've spent over an hour on this question .

Book is wrong.
Ok thanks guys

## 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 17, 2012
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 did it go?

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