» Esercizi svolti di Matematica e Fisica

Surface plotting from a set of points

Here a real function f of two real variables x, y, is assigned, i.e. f (x, y), through the values assumed in assigned points. It is asked to draw the graph (surface in R ^ 3). Mathematica has the ListSurfacePlot3D statement which is the three-dimensional analog of ListPlot (the latter plots the graph of a function of a variable f (x)). Here are some suggestive graphics taken from the Mathematica library.

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Intrecci armoniosi (moto piano, equazioni orarie. Mathematica)

Una particella compie in moto piano. Le equazioni orarie sono x(t)=cos(t)+1/2*cos(7*t)+1/3*cos(17*t+π/2)
y(t)=sin(t)+1/2*sin(7*t)+1/3*sin(17*t+π/2).
Di seguito il codice Mathematica per plottare la traiettoria. Lasciamo come parametro libero tmax, in modo da creare l'animazione grafica in fig. 1. (altro…)

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