You are Here: Home

# Differentiation Question help

Maths and statistics discussion, revision, exam and homework help.

Announcements Posted on
Find out how cards are replacing warnings on TSR...read more 03-12-2013
1. Differentiation Question help

Can anyone please explain to me how to get the answers? how are we supposed to differentiate y^2 in respect to x?

2. Re: Differentiation Question help
Have you done implicit differentiation yet?
3. Re: Differentiation Question help
I'm afraid I don't know I'm not doing that in C1 or C2
4. Re: Differentiation Question help
(Original post by seana39223)
I'm afraid I don't know I'm not doing that in C1 or C2
Implicit differentiation is in C4.

From where did you got this question, this requires a C4 technique, i won't expect this question in C1 and C2.
5. Re: Differentiation Question help
(Original post by raheem94)
Implicit differentiation is in C4.

From where did you got this question, this requires a C4 technique, i won't expect this question in C1 and C2.
Agreed
6. Re: Differentiation Question help
(Original post by TenOfThem)
Agreed
By the way, the differentiation of the left hand side is even much tougher than which can be expected in a C4 exam.

Will it be done in this way,

Can you please confirm, have i done it correctly?
7. Re: Differentiation Question help
(Original post by TenOfThem)
Agreed
8. Re: Differentiation Question help
yes
9. Re: Differentiation Question help
(Original post by TenOfThem)
yes
Thanks .
10. Re: Differentiation Question help
When in doubt... consult Wolfram Alpha.
11. Re: Differentiation Question help
(Original post by Brand New Eyes)
When in doubt... consult Wolfram Alpha.
I use wolfram a lot, and i did thought to use it for this question, but i didn't had any idea how will i type this expression.

Can you please tell how i can input, , in wolfram alpha?
12. Re: Differentiation Question help
(Original post by raheem94)
I use wolfram a lot, and i did thought to use it for this question, but i didn't had any idea how will i type this expression.

Can you please tell how i can input, , in wolfram alpha?
just as you normally would "d^2/dx^2 (y^2)"

http://www.wolframalpha.com/input/?i...E2+%28y%5E2%29

Did the question give you y?
13. Re: Differentiation Question help
(Original post by Brand New Eyes)
just as you normally would "d^2/dx^2 (y^2)"

http://www.wolframalpha.com/input/?i...E2+%28y%5E2%29

Did the question give you y?
Its not my question, i am not the OP.

I tried this before and it gives zero, but how will wolfram give my answer?
14. Re: Differentiation Question help
according to the solution bank,we are required to use the chain rule
but how are we going to do the first derivative using chain rule?

i do know implicit diff but i just don't see it here or maybe forgotten..

this is fp2,btw
15. Re: Differentiation Question help
(Original post by Anonymous12345)
according to the solution bank,we are required to use the chain rule
but how are we going to do the first derivative using chain rule?

i do know implicit diff but i just don't see it here or maybe forgotten..

this is fp2,btw
The differentiation is as follow:
Last edited by raheem94; 31-03-2012 at 03:03.
16. Re: Differentiation Question help
(Original post by Anonymous12345)
according to the solution bank,we are required to use the chain rule
but how are we going to do the first derivative using chain rule?

i do know implicit diff but i just don't see it here or maybe forgotten..

this is fp2,btw
The first derivative will be calculated as follow,

So the chain rule is being used in the above expression, doing , is known as using the chain rule.

After searching through the book, i was finally able to find the question. Below is the image of the answer from the solution bank,

I text marked in red looks to have a mistake in it, according to me it should be,
Last edited by raheem94; 31-03-2012 at 03:15.
17. Re: Differentiation Question help
(Original post by raheem94)
I use wolfram a lot, and i did thought to use it for this question, but i didn't had any idea how will i type this expression.

Can you please tell how i can input, , in wolfram alpha?

(Original post by Brand New Eyes)
When in doubt... consult Wolfram Alpha.
Wolfram Alpha is useless at implicit differentiation from my past experience. They take any implicit derivative to = 0 (e.g on wolfram alpha).
18. Re: Differentiation Question help
(Original post by Anonymous12345)
according to the solution bank,we are required to use the chain rule
but how are we going to do the first derivative using chain rule?

i do know implicit diff but i just don't see it here or maybe forgotten..
Implicit differentiation is the chain rule
19. Re: Differentiation Question help
(Original post by hassi94)
Wolfram Alpha is useless at implicit differentiation from my past experience. They take any implicit derivative to = 0 (e.g on wolfram alpha).
I agree with you here, i also tried to do it there and it gives the answer as zero. But i still doubt that there will be a way to do this on wolfam alpha. Wolfram Alpha is so famous, has anyone ever wrote a detailed guide about using it?

(Original post by TenOfThem)
Implicit differentiation is the chain rule

Can anyone of you please see post 16, the image of the solution from the solution bank is attached there, is the solution completely correct or not? I am prone to mistakes, so can somebody please confirm have i have pointed out the correct mistake.
20. Re: Differentiation Question help
yes it should have been a y

## Step 2: Register

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

this is what you'll be called on TSR

2. this can't be left blank

never shared and never spammed

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. By completing the slider below you agree to The Student Room's terms & conditions and site rules

2. Slide the button to the right to create your account

You don't slide that way? No problem.

Last updated: April 1, 2012
Study resources