I would love to borrow a calculator capable of solving quadratic equations automatically. Do you have one you wouldn't mind going without for six to eight weeks? Are you anywhere near Sunnyvale, CA?
I am not going to be evil and say I do. But it's in TX. I wish you luck in finding one although, I will say you can pick them up at Target or Office Depot, or any similar box store, these days for not a lot of money. Graphing Calculators are standard fare in higher level high school math and science classes.
Good point. Last time I looked for one, ~$100 was the right range. It's possible that something a lot cheaper would do what I need; I don't truly need graphing capability, just the quadratic formula. But if I have to spend $100 I'll spend $100. I'd be a fool to endanger my long-term goals with frugality at that level.
Target has a Casio for 50ish and an HP for 75. (http://www.target.com/dp/B000JEP19W/ref=sc_qi_detailbutton?ie=UTF8&pf_rd_r=1BDG1VX4KF01N32BSSB6&pf_rd_p=465357931&pf_rd_i=B000JEP19W&pf_rd_s=bottom-6&pf_rd_m=A1VC38T7YXB528&pf_rd_t=5101)
Not yet. Someone else on my flist recently did; Mary, perhaps? I thought I was going to need one for statistics, but on the first day of class the prof said we could get by with a TI-30XA, so I returned the $120 jobbie and picked up a nice $11 TI-30XA. :-)
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I am rambling. I think it's time to go to sleep.
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I bet one of mine does this quadratic equation thingie but I have not played with them in a long time so I wouldn't even know how to do it.
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