Le vendredi 5 décembre 2014 21:14:54 UTC+1, maldun a écrit : > > > I don't think that the functionality of Sage is the big problem, in fact > Sage has a great features for zero cost. > > Nothing is really free. My estimate for a google search is an energy cost of 16Wh per search (equivalent to 7g CO2). I wonder how much it is for a SMC one-cell computation or a distant sage server one-cell computation. If it's about the same order size, then it's more than a local PC computation (you can run a laptop about 1/4 hour with the same energy) and much more than a calculator computation : you can run a CAS calculator a whole day with 16Wh. If you make 60 distant computations during a lesson, it would cost about 1kWh if my estimate is correct (energy cost for the local terminal not included).
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