3rd column has two a's.
Just check the ring axioms. 2 isn't closed under addition. You can get a polynomial whose degree is odd
blitzer6266 wrote:For 59: viewtopic.php?f=1&t=637&p=3156#p3156
for 48, rewrite v as v= u - x^(1/3) + 1
As x ranges from 0 to 1, this gives a family of lines with slope 1
Because v=1+y ranges from 1 to 2 as y ranges from 0 to 1, the image looks like A
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