I would just like to ask if you know any free computer program that can write matrix equations? I need it because I want to start a lecture on matrices in my new guild.
Besides that, do you also know any computer program that can be used in graphing equations becaus I don't even have a graphing calculator.
(By the way, if you're interested in teaching anything, you can join my guild,
Academia University. I don't expect you to teach a whole course, at least just parts such as logarithms, polar equations, etc. And you could discuss about things other than math/physics in there.)
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