Recent content by RedAnsar

Hi all, The title is pretty much the question. My friend (who wants to go to graduate school in Physics) is between two courses the math department offers: an upper-level linear algebra course, and a second course in ODEs. Here are the course descriptions: and The school in question is...

Junior in the Fall phys323 - Honors EnM phys333 - Experimental Optics math420 - Dynamical Systems engl288 - English Writing bio135 - Cell/Molecular Biology

Playing some more, I don't think the explicit function for RungeKutta is necessary. ode45 is a fourth-order RungeKutta method, after all. I wrote some more code, this time including the second equation: firstode.m function Eprime = firstode(t,E)...

Thanks! I'll try and work with that. Le is just the Langevin function, coth(x)-(1/x), with the variable ξe as the parameter: Le = L(ξe) = coth(ξe) - 1/(ξe)

Do you have a suggestion on how to go about doing this...? Sounds...daunting : ( I suppose a first step is reading more about Runge-Kutta, huh (it was never covered in my ODE class)

Thanks for the welcome, chiro. I thought it would be a system of ODEs, but it seems that would be only in the case that my equations wouldn't contain any terms with t, only the variable sought after E.g.) y1' = y1 + y2 y2' = y1*y2 In my case, I do have terms with t (notice the cos(w*t) in the...

Hi all, I'm trying to use MATLAB to obtain simulations for some equations that describe a model. I'm new to MATLAB (though I've taken a course in C++ and another in Java), so I read a bit on the mathworks website on solving ODEs, and settled on [FONT="Courier New"]ode45 The equations I'm...

Hi all, Sorry if this topic has been done a lot. I'm not very good at searching. It seems to me that fluid mechanics is left to engineers and mathematicians (in particular, applied mathematicians? I guess they study the concept of flow?) What gives? Engineering department here at Cornell has...

Homework Statement http://i54.tinypic.com/2uztu6d.jpg Homework Equations I don't know how to use LaTeX, sorry... mass = L times integral of density, where the endpoints are the bounds of the region. However, in this case...it seems to me that things are reserved... The Attempt at...

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Schey's is far from your popular calculus book :) As in, it's a very good 'popular' Calculus book

Vector Calculus: A Intro Korean II: A Gen Chem (honors): B+ Electromagnetism: A-

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Second semester: Honors Inorganic & General Chemistry II Physics II: Electricity & Magnetism Elementary Korean II Poverty and Inequality in Latin America (yay liberal ed requirements) Multivariable Calculus

Colombia but I get them with other nationalistic/patriotic songs from the US (among other countries...) I suppose it is because patriotic songs have so much emotion in them you can feel it when they're properly played.