Is there a trick to search the internet for math notation? For example what if I want to search the internet for "X / ~" ? The default google search is useless for this and for similar searches where most of the search characters are not letters or numbers. Google code search allows this kind of search within source code, but this service will shut down in a few months and anyway it searches only source code not math.
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I recommend using symbolhound.com. I recently found this site, it will do a search for specific symbols, and is good for programming. May be good for math, just searched '4x^2' and it worked fine.