Recent content by RedAnsar

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    Upper-level Linear Algebra or upper-level ODEs?

    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...
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    Post Your Summer/Fall 2012 Class Schedules

    Junior in the Fall phys323 - Honors EnM phys333 - Experimental Optics math420 - Dynamical Systems engl288 - English Writing bio135 - Cell/Molecular Biology
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    MATLAB MATLAB - Using solution of one ODE in another

    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)...
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    MATLAB MATLAB - Using solution of one ODE in another

    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)
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    MATLAB MATLAB - Using solution of one ODE in another

    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)
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    MATLAB MATLAB - Using solution of one ODE in another

    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...
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    MATLAB MATLAB - Using solution of one ODE in another

    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...
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    Fluid Mechanics - For engineers and mathematicians?

    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...
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    Total mass of a cord, uniform density

    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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    Summer getting too hard for you? Post your Fall Schedule to cool down

    linear algebra physics 3: waves, oscillations, and quantum mechanics introduction to special relativity organic chemistry 1 intermediate korean 1 introduction to hispanic linguistics rising sophomore
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    Clarification on curl and divergence in cylindrical and spherical coordinates.

    Schey's is far from your popular calculus book :) As in, it's a very good 'popular' Calculus book
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    Post Your Grades for Spring Term

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

    t-shirt Hyperspace by Michio Kaku electric blanket digital watch $50 + $25movie gift card
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    Post your Winter and Spring 2011 schedules here

    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
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    Music Musical Chills: Do You Experience Them?

    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.
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