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How can I determined what the minimum sampling frequency should be for the 20-term expression for the function f[t_] = (4/Pi) Sum[(1/n) Sin[2 Pi n t], {n, 1, Infinity, 2}] where n= 1,3,5,10,20[![enter image description here][1]][1] How can I sample all plots at ten times that frequencyRead more

Have a bit of an analysis issue with Fourier transform of a sinusoidal signal: I have a piece of signal that represents spatial scanning of a pattern. xcoordinate is distance and y is amplitude. I’m trying to receive a power spectrum of the signal in order to understand how “clean” the sine pattern is. theRead more

When traveling to other countries it’s nice to be able to roam or buy a local SIM and have 24/7 access to the Internet. But unfortunately different countries use different parts of the radio spectrum for 3G/4G, so one could find themselves stuck without a reliable connection when (say) using a European phone in theRead more

All over the internet, there is a variety of suggestions for how often a cron should be run, without any real suitable explanation. Thus, I was wondering if anyone could help myself identify ‘ideal’, settings. Magento’s recommendation is: /bin/sh /path/to/your/magento/site/root/cron.sh For clarity, Magento suggests to execute on every minutes. But, have seen some of theRead more

I am attempting to create a histogram with the data centerA = {174, 225, 372, 159, 180} I would like the frequency of 174 to belong to 0-5, 225 to belong to 5-10, 372 to belong to 10-15, 159 to belong to 15-25, 180 to belong to 25-50. I’ve tried using the Bin argument inRead more

This is purely anecdotal, but I used to post and engage with Facebook a lot more earlier in the year, both with my own posts and liking others, commenting, etc. Whenever I posted an event or something that I wanted to share, it seemed to get a fair number of likes and shares. Fast-forward toRead more