# Edexcel AS mathematics- differentiating.

#1
Hey everyone!
Does anyone know how I can solve this question:

"dy/dx = 1/ 6x(x-1)^1/2

Find an expression for d^2y/dy^2 in terms of x. Give your answer in its simplest form."

I know how to find the second derivative- but the layout of dy/dx caught me out.
0
4 weeks ago
#2
(Original post by Sq-ish-y)

Find an expression for d^2y/dy^2 in terms of x.
they probably mean d2y/dx2
0
#3
yeah. I'm differentiating. It's the same thing except I cannot type my powers out like that. Sorry for the confusion.
(Original post by the bear)
they probably mean d2y/dx2
0
4 weeks ago
#4
(Original post by Sq-ish-y)
Hey everyone!
Does anyone know how I can solve this question:

"dy/dx = 1/ 6x(x-1)^1/2

Find an expression for d^2y/dy^2 in terms of x. Give your answer in its simplest form."

I know how to find the second derivative- but the layout of dy/dx caught me out.
Have you solved this now?

If it's then it should be a reasonably straightforward application of the product rule to get the second derivative
1
#5
thank you so much for this! I hadn't managed to solve it but this really helped
(Original post by davros)
Have you solved this now?

If it's then it should be a reasonably straightforward application of the product rule to get the second derivative
0
4 weeks ago
#6
(Original post by Sq-ish-y)
It's the same thing except I cannot type my powers out like that.
d[sup]2[/sup]y/dx[sup]2[/sup]

just copy this
0
X

new posts
Back
to top
Latest
My Feed

### Oops, nobody has postedin the last few hours.

Why not re-start the conversation?

see more

### See more of what you like onThe Student Room

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

### Poll

Join the discussion

#### Year 12s - where are you at with making decisions about university?

I’ve chosen my course and my university (19)
32.2%
I’ve chosen my course and shortlisted some universities (22)
37.29%
I’ve chosen my course, but not any universities (2)
3.39%
I’ve chosen my university, but not my course (3)
5.08%
I’ve shortlisted some universities, but not my course (4)
6.78%
I’m starting to consider my university options (7)
11.86%
I haven’t started thinking about university yet (1)
1.69%
I’m not planning on going to university (1)
1.69%