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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 in the area

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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Recent Answers from Alon Mandes

2009-11-19 Critical Numbers:

f(x)=x^4-6x^2+2 f'(x)=4x^3-12x f'(x)=0 : 4x^3-12x=0 --> x(4x^2-12)=0 . Solutions : x1=0, x2=√3, x3=-√3 . These are the critical points . f''(x)=12x^2-12 . f''(0)=-12 --> -12<0 then x1=0

2009-11-13 calcus:

Tangent line that passes through the origin will have the equation : y=mx . Where m is the slope of the line %26 it's equal to the derivative of the function at point (xo,yo). Let's calculate derivative

2009-11-13 calculus 1:

Let's set this time as to . After 1 hour boat B arrived to the dock. That means that at 2pm after to minutes, boat A travelled 20to %26 boat B travelled 15to . boat B where 15 mile away from the dock

2009-11-13 Calculus:

In order to find the equation of the tangent line y=mx+n . Where m is the slope & n is the intersect with y-axis, we must be given the point where the tangent line touches the graph. 1) f(x)=1/x^(1/3)

2009-11-12 the derivative of y=sinx and y=cosx:

I attached a drawing of the circle & the triangle with all the angles . Area=S=½X²Sin(Ө). Let's find X as function of Ө : Sine Rule : X/sin(φ)=R/sin(Ө/2) --> X=Rsin(φ)/sin(Ө

 

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