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One small step toward automating homework 🙂 My lecturer doesn’t accept calculations done in Mathematica code as homework. I have 30 pages of small calculations such as the one below. I don’t want to write them out by hand. Surely there is a way to automate the process using TraditionalForm[] and macro coding? Below isRead more

I need to calculate unique ids within different intervals (3,4,5,6 months…) by for each month. I need to do that for different groups as well such as age, gender etc. This is how my data looks like: ID Yr_month Age Gender 11 2012-01 30 M 11 2012-02 30 M … 11 2012-12 30 M 12Read more

So when I try to run the following code for arrays with more than 10k elements, it takes hours and I don’t know how to make it in the most efficient way. Any ideas? from scipy.stats import entropy as KL import numpy as np def dis(di,dj): di = np.asanyarray(di) dj = np.asanyarray(dj) m = 0.5Read more

I’m not seeing how they get x=3. Please help. I have an exam Tuesday, and this is the only step holding me up.Read more

double KMToMiles(double distance) double MilesToKM(double distance) double FeetToMetres(double distance) double MetresToFeet(double distance) double KgToPounds(double weight) double PoundsToKg(double weight) double CelciusToFahrenheit(double temperature) double FahrenheightToCelcius(double temperature) The Calculation class should have the following methods int SumOfSeries(int start, int end, int incr) int SumOfArray(int data[], int size) int ProductOfSeries(int start, int end, int incr) int ProductOfArray(int data[], intRead more

This is my first post in this community. Please forgive me if I posting at the wrong place. I trying to get fully understanding about how to calculate CRC using code below where initial value is 0xFFFF and 0x1021 is polynomial. public class CRC16CCITT { public static void main(String[] args) { int crc = 0xFFFF;Read more

how should I calculate and implement this formula in Matlab? this function is a part of yellowfin tuner function. how could I find alpha and mue? thanksRead more

I am interested in calculating various entropy measures of time series, and was surprised to find that none of them are included with Mathematica. Sample Entropy (SampEn) is a fairly common technique for this purpose, so I’ve written a module to perform the calculation, but I’m surprised at how slow it is (especially compared toRead more

I am trying to make my calculation faster. I was hoping, when I compiled it, it would work much faster, but in the end its even slower. I don’t know if I am using Compile correctly. I am open to any suggestion on how to make this computation faster. I use the data: DD =Read more

At issue is the volume, in terms of $ c \in [0,1]$ , as depicted in the shading in the following f[x_,y_,z_] = x*y*z+(1 – x)*(1 – y)*(1 – z) Manipulate[ RegionPlot3D[f[x, y, z] <= c, {x, 0, 1}, {y, 0, 1}, {z, 0, 1}], {c, 0, 1, .01}] For $ 1/4<c<1$ the region isRead more