Calculus/Derivative

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Expert: Alon Mandes - 10/21/2008


Question
How would I find the derivative of this.....


(58+Rpi)(500000/pi)(r^-1)+)19*pi*r^2)

where R is a constant.

Answer
d/dr { (58+πR)(500000/π)r^(-1)+19πr^2 } =
(58+πR)(500000/π) * d/dr { r^(-1) } + d/dr { 19πr^2 }

(" d/dr means We derive with respect ro r, so all the rest are constants ")

=-(58+πR)(500000/π)r^(-2) + 38πr
=-(58+πR)(500000/π)1/r^2 + 38πr

Alon.

Calculus

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Alon Mandes

Expertise

Kind of questions I can answer : Limits, Derivatives, Integration, Implicit functions, continuousity, differentiation ,Extremum problems, Lagrange multipliers, Gradients, Surface integrals, Multi variables functions ,Multi variables Integrals,Complex variables ,Complex functions, Curves, Trajectory integrals & Vector analyse,Divergence,Rotor & word problems. Kind of question I can't answer : Economics,Combinatorics,infinite series & convergence ,Statistics & Probabilities .

Experience

1. I'm a team member of mathnerds (math site for answering questions) 2. I'm a team member in the Student's Union of the Technion, helping students who have problems in mathematics. 3. 2 years of experience as a math teacher in college. 4. I give free homework help for high school students in Mathematics & Physics. 5. I teach part time in collage the subjects : "Digital Signal Processing" , "Random Signals & Noise" , "Complex Functions".

Organizations
Hi-Tech company : GSM4VOIP ; job possition : Algorythm developer.

Education/Credentials
M.A in Mathematics & Bs.c in Electronics.

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