Board 8 > what is the difference between quadric and quadratic?

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MarkS222222222222222
03/09/12 12:11:00 AM
#1:


I'm trying to understand the section of the research article and they refer to a quadratic effect, a cubic effect, and a quadric effect. If anyone can shed any light on this at all, I'd very much appreciate it.

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CherryCokes
03/09/12 12:12:00 AM
#2:


don't use the quadratic formula when you need the quadric effect

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pjbasis
03/09/12 12:16:00 AM
#3:


Quadratic = 2
Cubic = 3

I'm guessing the other is 4.

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foolm0ron
03/09/12 12:16:00 AM
#4:


http://en.wikipedia.org/wiki/Quadric

Quadric = set of zeroes of a quadratic

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LordoftheMorons
03/09/12 12:26:00 AM
#5:


Are you sure it doesn't say quartic (a degree 4 polynomial?)

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Forceful_Dragon
03/09/12 12:35:00 AM
#6:


Quadratic = A^B
Cubic = (A^B)^C
Quadric = ((A^B)^C)^D?

Like that? So a Quadric measures the 'volume' of a 4-dimensional object?

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MarkS222222222222222
03/09/12 1:06:00 AM
#7:


Thank you everyone. Yeah, it was quadric, not quartic. I had forgotten that ^2 was quadratic and not just called squared, so I thought they both referred to ^4 in some way. Also, a clear typo in one of the tables where 'quadratic' was used twice instead of quadratic and quadric didn't help.

Thanks again

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