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17h
awarded  Popular Question
Aug
22
awarded  Yearling
Jun
26
comment How to solve for the intersection points of two ellipses?
solvePoints[{m1_,m2_}]:={r1,r2}/.Normal@Solve[Thread[m1.{Sin[t1],Cos[t1],1}==m2‌​.{Sin[t2],Cos[t2],1}=={r1,r2}],{t1,t2,r1,r2},Reals,Method->Reduce,Cubics->False,Q‌​uartics->False]/.C[_]:>0.
May
6
awarded  Nice Answer
Mar
21
awarded  Notable Question
Feb
9
revised Does NRoots own an abstract counterpart? If not, can we write one?
added 458 characters in body
Feb
9
comment Does NRoots own an abstract counterpart? If not, can we write one?
@xzczd, 根据你编辑后的代码,Mathematica 10.02的NRoots的速度大概是Mathematica 9的4倍多;用我答案中的roots,速度和matlab的roots差不多
Feb
9
comment Does NRoots own an abstract counterpart? If not, can we write one?
list.x^Range[0,n]==x^Range[0,n].Transpose@list
Feb
8
answered Does NRoots own an abstract counterpart? If not, can we write one?
Feb
7
revised How to draw a polygon with hue color like this one (Koch snowflake)?
added 82 characters in body
Feb
7
revised How to draw a polygon with hue color like this one (Koch snowflake)?
added 82 characters in body
Feb
7
revised How to draw a polygon with hue color like this one (Koch snowflake)?
added 9 characters in body
Feb
7
comment The magic square function
@Nick Don't worry about that.
Feb
6
answered How to draw a polygon with hue color like this one (Koch snowflake)?
Feb
3
revised The magic square function
added 1 character in body
Feb
3
revised The magic square function
added 31 characters in body
Feb
3
answered The magic square function
Dec
23
comment How do you create such an animated GIF via Mathematica?
Related link, blog.csdn.net/stereohomology/article/details/41625867
Dec
22
answered Plot of Implicit Equations
Dec
22
comment Plot of Implicit Equations
Releated link, mathematica.stackexchange.com/questions/19590/…