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I did get those Geomag sets I said I'd ordered, and I had been intending to make a post about my fun with them, when hitchhiker wrote a post that prompted me to actually get 'round to it now. Anyway, excerpted and expanded from my comment there. I find lately that I'm often a bit too fidgety to read much (!!!) and so playing with construction toys (with ( Read more... )

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I was browsing through randomquestions and was struck by a math question: what is x1/2 + x1/4 = 10 ? Being a math geek, I couldn't help but take a swing at an answer. But this made me wonder if there were a general way to tell how many complex roots such an equation had, and if so, how many that was. I don't have a nice handy math graphing program (such as ( Read more... )

I want this! If only....