belisarius
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 Oct27 revised Integral evalutation deleted 50 characters in body; edited tags; edited tags Oct27 comment Derivatives of functions with arbitrary number of variables? @rhermans I'm not sure. The OP hasn't answered why the default Derivative[n][f] isn't a convenient notation. Oct27 reviewed Leave Open Speeding up the non-negativity algorithm for multilinear function with interval probabilities? Oct27 comment Importing data from files designated in an InputString dialog box i = 0; While[ (str = InputString[]) != "", c[i++] = Import[...]]? Oct27 revised Importing data from files designated in an InputString dialog box deleted 25 characters in body Oct27 comment how to diagonalize this symbolic matrix? Dear @KonstantinKonstantinov: instead of posting a patronizing comment you could have asked why I did 1., why I don't think 2. is true and why I think you're wrong in 3.. Now you've lost the opportunity. Have a nice day. Oct27 comment how to diagonalize this symbolic matrix? @erik see edit,please Oct27 revised how to diagonalize this symbolic matrix? added 247 characters in body Oct27 comment how to diagonalize this symbolic matrix? Welcome to Mathematica.SE! I suggest the following: 1) As you receive help, try to give it too, by answering questions in your area of expertise. 2) Read the faq! 3) When you see good questions and answers, vote them up by clicking the gray triangles, because the credibility of the system is based on the reputation gained by users sharing their knowledge. Also, please remember to accept the answer, if any, that solves your problem, by clicking the checkmark sign! Oct27 answered how to diagonalize this symbolic matrix? Oct27 revised how to diagonalize this symbolic matrix? added 6 characters in body Oct27 answered In which version was this Extract syntax introduced? Oct27 revised how to diagonalize this symbolic matrix? added 4 characters in body Oct27 comment What is the meaning of //N in mathematica? @Mr.Wizard Interesting update. I believe I missed the original question/answers. Thanks! Oct27 comment In which version was this Extract syntax introduced? Also on v8.0.0. Oct27 comment In which version was this Extract syntax introduced? Works on V9.0.1 Oct27 comment What is the meaning of //N in mathematica? This should be closed, but why downvote? Oct27 comment Trouble plotting sum of polylogairthmic functions of two variables Welcome to Mathematica.SE! I suggest the following: 1) As you receive help, try to give it too, by answering questions in your area of expertise. 2) Read the faq! 3) When you see good questions and answers, vote them up by clicking the gray triangles, because the credibility of the system is based on the reputation gained by users sharing their knowledge. Also, please remember to accept the answer, if any, that solves your problem, by clicking the checkmark sign! Oct27 comment Trouble plotting sum of polylogairthmic functions of two variables @Satish.R.M. No problem. We usually frown upon questions that don't show any effort which is not your case. It is completely understandable that you'll need to overcome these language bumps as you progress with Mathematica Oct27 revised Speeding up the generation of all k-edge-coloring of a graph deleted 5 characters in body