Re: d.f(x,x^2)/d.x^2 = ?

In article <1141132837.374327.229610@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>,
dan10170 <dkfitzpatrick@xxxxxxxxx> wrote:

Hello,

I have a function, such of the following, which includes
terms of x and x^2:

a + b*x^2
f(x) = -----------------
c*x

I need a derivative wrt to x^2, i.e.,

d.f(x)
------- = ?
d.x^2

I know d.f(x)/d.x. If i had to guess, i would assume
the two are related by (1/(2*x), but not sure.

appreciate anyone offering some clarification here.

regards,

--dan


It's probably up to the author to say what is meant when non-standard
notation is used...

Maybe there is a little 2 missing...

d^2f(x) / dx^2 ??
.

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