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1d
answered How can I prove that modul of this vector bigger than radius of a circle?
Jul
20
revised Solve equations $\sqrt{t +9} - \sqrt{t} = 1$
deleted 1 character in body
Jul
20
answered Solve equations $\sqrt{t +9} - \sqrt{t} = 1$
Jul
20
revised How can I prove that modul of this vector bigger than radius of a circle?
added 150 characters in body
Jul
20
comment How can I prove that modul of this vector bigger than radius of a circle?
@MichaelBurr Yes. You are right.
Jul
20
asked How can I prove that modul of this vector bigger than radius of a circle?
May
17
revised How can I prove inequality?
added 86 characters in body
May
15
comment Vertices that create a convex quadrilateral
Can I count with stars and bars method?
May
14
accepted How to select four points so that origin is not contained in convex hull of these points?
May
14
revised How to select four points so that origin is not contained in convex hull of these points?
added 264 characters in body
May
14
comment How can I prove inequality?
There are close(4). Why?
May
14
asked How can I prove inequality?
May
10
asked How to select four points so that origin is not contained in convex hull of these points?
May
9
awarded  Tumbleweed
May
7
revised How to solve this nonstandard system of equations?
added 1051 characters in body
May
7
revised How to solve this nonstandard system of equations?
added 36 characters in body
May
7
revised How to solve this nonstandard system of equations?
added 5 characters in body
May
7
answered How to solve this nonstandard system of equations?
May
7
awarded  Inquisitive
May
6
asked How to solve this nonstandard system of equations?