Total differentials

Total differentials are useful but how do you technically go from them to differentials of functions. Let’s define $f(x)$ as a continuous function. Then $$ df= \frac{\partial f}{\partial x} dx,$$ where df is called the total differential. If x(t) is a function t then how do we get this explicit dependence? $$ f = \int… Continue reading Total differentials

Getting the newest version of Octave for Ubuntu/Debian

If you want the newest version of Octave (3.8 as of the time of writing) you will need to compile it yourself. Do sudo apt-get build-dep octave sudo apt-get install libqscintilla2-9 libqscintilla2-dev wget ftp://ftp.gnu.org/gnu/octave/octave-3.8.0.tar.bz2 tar -xvf octave-3.8.0.tar.bz2 cd octave-3.8.0 ./configure make make check sudo make install when this is done Octave should work for you. Keep… Continue reading Getting the newest version of Octave for Ubuntu/Debian

Fase-skift i øvelse 5

Det kan være svært at fitte til arctan i forbindelse med målingen af fasen i øvelse 5 i Mekanik og Termodynamik. Her er en lille forklaring og et udtryk med cosinus man kan bruge i stedet: phase

Nyttige links til rapporter

Guide til brug af Matlab uden behov for kendskab til Matlab: matlab_fit_without_knowing_matlab Hyppige fejl i rapporter: common_mistakes Ved problemer med Word template gem den som docx for at få formler til at virke. Gode råd til rapport skrivning: goodadvice