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Post by Bannanachair on Oct 5, 2016 11:05:43 GMT -4
Who here is doing nonreal numbers in their school? I haven't formally "learned" them yet and I won't be tested on them in exams for a few years I think (I'll have to double-check my curriculum, they might be next year or they might be in three years) but I know the basics of what imaginary numbers are because I've been subscribed to numberphile for the past few years.
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Post by LeBlunder on Oct 5, 2016 12:49:28 GMT -4
Is a non real number like the square root of negative 1?
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Post by Deleted on Oct 5, 2016 17:21:01 GMT -4
Is a non real number like the square root of negative 1? Yes, that's the most known/common imaginary number. |
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Post by LeBlunder on Oct 5, 2016 17:30:48 GMT -4
Then yes... I think
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Post by Deleted on Oct 5, 2016 17:34:32 GMT -4
 If you recognize/understand this, then yes, you know a thing or two about nonreal numbers. |
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Post by LeBlunder on Oct 5, 2016 17:37:19 GMT -4
Yes
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Post by Deleted on Oct 5, 2016 17:39:45 GMT -4
I like nonreal numbers; they make for good math jokes.  Kudos to whoever gets this, and sorry to anyone who's seen it before. |
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Post by Bannanachair on Oct 5, 2016 20:05:43 GMT -4
Is a non real number like the square root of negative 1? Yes, that is the definition of a nonreal number (though -1 does have about 6 different roots if you fuck with mathematics in a certain way...) |
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Post by Bannanachair on Oct 5, 2016 20:06:51 GMT -4
Also, for those of you who do know what imaginary and/or complex numbers are, what do you do with those numbers?
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Post by LeBlunder on Oct 5, 2016 20:13:01 GMT -4
We just went over them briefly when we were going over quadratics.
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Post by Tol on Oct 5, 2016 20:19:40 GMT -4
Also, for those of you who do know what imaginary and/or complex numbers are, what do you do with those numbers? Some quadratic equations only have nonreal roots/solutions. Also e^i(x) will give you cos(x) + i*sin(x), so you use it to prove funky trig things. Otherwise you'll be fucked to find a real world application for numbers that aren't, you know, real |
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Post by God Bebi Satan on Oct 5, 2016 21:45:50 GMT -4
this is a redundant question and means very little in the long run
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Post by Not WiFi on Oct 5, 2016 21:46:19 GMT -4
Also, for those of you who do know what imaginary and/or complex numbers are, what do you do with those numbers? I use it to count how many friends you have. |
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Post by Τι κοιτάς ρε on Oct 5, 2016 21:47:03 GMT -4
Esentially, what Tol said. Little practical application beyond the field of engineering or physics. Still an interesting subject, though.
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Post by The Jiggler on Oct 5, 2016 23:47:42 GMT -4
In my Algebra I class my teacher said that we were going to be practicing quadratic equations and other functions using non-real numbers. But if I take trigonometry in Senior year, I'll probably have at least had sex with one or two non-real numbers.
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Post by Bannanachair on Oct 6, 2016 3:49:18 GMT -4
Also, for those of you who do know what imaginary and/or complex numbers are, what do you do with those numbers? Some quadratic equations only have nonreal roots/solutions. Also e^i(x) will give you cos(x) + i*sin(x), so you use it to prove funky trig things. Otherwise you'll be fucked to find a real world application for numbers that aren't, you know, realI know, but being taught that i exists just so that you can answer some quadratics is like an eight-year-old being told to calculate limits and plot hyperbolae just to come up with a somewhat annoying answer about what happens when you divide by zero. |
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Post by Duck14 on Oct 6, 2016 7:50:55 GMT -4
God, I did this stuff in high/middle school. It was stuff like this that eventually led to my hatred of maths, I used to love it. Not that I was bad at them just that they're essentially useless.
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Post by Deleted on Oct 6, 2016 16:53:33 GMT -4
they're essentially useless. bro |
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Post by Bannanachair on Oct 6, 2016 20:17:50 GMT -4
God, I did this stuff in high/middle school. It was stuff like this that eventually led to my hatred of maths, I used to love it. Not that I was bad at them just that they're essentially useless. They have some uses but nothing that you'll immediately comprehend at a highschool or early college level. I advise reading up on the Riemann Hypothesis. |
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Post by Xenos on Oct 6, 2016 20:21:18 GMT -4
my head hurts
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Post by Bannanachair on Oct 7, 2016 7:17:19 GMT -4
If that was in response to my advise to research the Riemann Hypothesis, I fully understand your pain. |
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Post by Duck14 on Oct 7, 2016 8:06:56 GMT -4
God, I did this stuff in high/middle school. It was stuff like this that eventually led to my hatred of maths, I used to love it. Not that I was bad at them just that they're essentially useless. They have some uses but nothing that you'll immediately comprehend at a highschool or early college level. I advise reading up on the Riemann Hypothesis. I understand maths well enough, it just irritated me at the time. |
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Post by debian budgie on Oct 7, 2016 22:22:32 GMT -4
learned this stuff at pre-calc
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