Register to reply

Derivative with respect to a variable

by ahjukhir
Tags: derivative
Share this thread:
ahjukhir
#1
Sep6-09, 03:22 PM
P: 1
little rusty with my derivatives...

Question derive Eo with respect to r
En = -C/r + D^(-r/p)

C,D and p are all constants...

so far I have Eo = -Cr^-2 .. but then im not sure about the exponential.

any help would be appreciated.
Thanks!
Phys.Org News Partner Science news on Phys.org
New model helps explain how provisions promote or reduce wildlife disease
Stress can make hard-working mongooses less likely to help in the future
Grammatical habits in written English reveal linguistic features of non-native speakers' languages
tiny-tim
#2
Sep6-09, 04:08 PM
Sci Advisor
HW Helper
Thanks
tiny-tim's Avatar
P: 26,160
Hi ahjukhir! Welcome to PF!

(try using the X2 tag just above the Reply box )

Hint: there's a special trick for this rewrite D-r/p as (eln(D))-r/p = e-(r/p)ln(D)


Register to reply

Related Discussions
Derivative with respect to a function Calculus 5
Derivative of f(z) with respect to z* does not exist Calculus & Beyond Homework 2
Derivative with respect to something else Calculus 5
Derivative with respect to a vector Calculus 3
Derivative of U(X(t),t) with respect to t Calculus 1