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| Expert | Average Ratings | Expertise |
|---|---|---|
ScottoU.S.
Available
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Any kind of mathematics (calculus, analysis, game theory, linear approximation, finite differences, linear regression, linear programming, numerical analysis, probability, statistics, etc.). I also have answered some questions in Physics (mass, momentum, falling bodies), Chemistry (charge, reactions, symbols, molecules), and Biology. | |
Ahmed SalamiNigeria
Available
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I can provide good answers to questions dealing in almost all of mathematics especially from A`Level downwards. I believe i would be very helpful in calculus and can as well help a good deal in Physics with most emphasis directed towards mechanics. | |
Alon MandesIsrael
Available
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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 . | |
Paul KlarreichOn Vacation
returns 11/15/2009 |
All topics in first-year calculus including infinite series, max-min and related rate problems. Also trigonometry and complex numbers, theory of equations, exponential and logarithmic functions. I can also try (but not guarantee) to answer questions on Analysis -- sequences, limits, continuity. | |
SocratesOn Vacation
returns 11/29/2009 |
I can answer questions from the standard four semester Calculus sequence. I am not prepared for questions on Tensor Calculus. Everything else is welcome. Derivatives, partial derivatives, ordinary differential equations, single and multiple integrals, change of variable, vector integration (Green`s Theorem, Stokes, and Gauss) and applications. |
The derivative is the quotient rule where f(x) = g(x)/h(x) where g(x) = 2009^x and h(x) = x^2009. g'(x) = ln(2009)2009^x and h'(x) = 2009x^2008. The derivative is (lo d hi - hi d lo)/lo². This
This picture would look a lot better if added on in a JPG file. From what I can see, we can approximate the curve with four cubics. On goes from -a to -3. One goes from -3 to 0. One goes from 0 to
The length of the rod is 1200 cm. The radius of the wheel is 40 cm. Draw a ling (or picture a line) from A that is perpendicular with the x-axis. The length of this vertical line is 40•sin(Θ)
Let's suppose that the point where the tangent line touch the ellipse is (xo,yo). We can find a relation between xo %26 yo, by substituting (xo,yo) in the equation of the ellipse : (xo²/4)+(yo²/9)=1
The volume V(t) is equal to the side s(t) to the third. That is, V(t) = s³(t). Given this, the change in volume is dV/dt = 3s²(t)(ds/dt). We are given that dV/dt = 2, so 2 = 3s²(t)(ds/dt). That

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