5

Questions
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6
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2
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$f^3,f^2$ are the cube and quadratic of f respectively and both infinite differentiable on $R$,how to show so is $f$

apr 17 at 17:53 katz 1,264●1●12

 
3
votes
1
answer
215
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How to partition a quadrilateral into a finite number of equal-area triangles

aug 20 at 3:51 Andres Caicedo 14.4k●1●42●79

 
0
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2
answers
208
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a problem about field extension [closed]

nov 23 at 10:06 J. H. S. 2,415●12●31

 
0
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0
answers
69
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solvablity for some polynomial

mar 16 at 7:27 bo.gu 101●4

 
-1
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0
answers
171
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an ordinary differential equation [closed]

jan 11 12 at 8:13 Ricky Demer 6,361●8●31