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/* Representación de una esfera irregular con Maxima*/ | |
/* Tomando las expresiones de J. Stewart Cálculo: conceptos y contextos */ | |
n:5$ | |
m:6$ | |
/*Definimos la superificie esférica usando las coordenadas esféricas*/ | |
rho:1+0.2*sin(m*theta)*sin(n*phi)$ | |
load(draw)$ | |
/* Definimos el dominio y el tipo de coordenadas para su gráfica */ | |
irr_sphere: spherical(rho,theta,0,2*%pi,phi,0,%pi)$ | |
/* Dibujamos la superfice sin colorear*/ |
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# Funcion entropia | |
# Calcula la funcion de entropia. | |
# Tomada de Gómez; Arias; Agudelo 2012. | |
# para un vector de probabilidades p_i | |
# entrada: vector de probabilidades p_i | |
# salida: valor de la entropia | |
entropia <- function(x){ | |
p <- (-1) * t(x) % * % log(x) | |
sum(p)} |