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 Jan16 awarded Critic Dec11 comment Cleaning up InverseLaplaceTransforms in Mathematica @SjoerdC.deVries Probably Simplify and FullSimplif give combinations of hyperbolic sine and cosine functions, and OP would prefere to have the result in the form of exponentials. Dec10 comment FindFit not giving a good fit despite good initial parameters It would be helpful if you submitted at least the data that you're fitting. Also, what version of Mathematica are you using? Dec10 answered Prove an identity in quantum harmonic oscillator Dec4 awarded Enthusiast Nov29 awarded Commentator Nov29 comment An easier and more efficient way to combine lists? @kale could you say how fast is Array in your setup? Nov29 comment MathKernel and MathLM interaction @Searke it contradicts my observations. It happened to me few times (two times I guess) that I lost part of my work some time after the crash of the server running MathLM. But in all these cases I was working in the frontend, not in pure MathKernel. Nov29 comment Is there an equivalent of MATLAB's Workspace window in Mathematica? You might be interested in this Stack Overflow question: Profiling memory usage in Mathematica and especially the answer by Alexey Popkov. Nov29 comment Simplify Binomial Function It is interesting, that Simplify[Binomial[n, k]/Binomial[n, 1 + k], ComplexityFunction -> f] with your definition for f gives Binomial[n, k]/Binomial[n, 1 + k]. It looks like Simplify does not try enough transformations of Binomial. Nov21 revised generating pdf using UseFrontEnd added 520 characters in body Nov21 comment generating pdf using UseFrontEnd welll it seems you don't need the UsingFrontEnd command to plot = Plot[x^2,{x,-2,2}] and Export["/home/username/output.jpg",plot]. The reference says that UsingFrontEnd is neccesary for NotebookWrite[] and similar functions (I have used it to NotebookPrint[] some time ago). Nov21 revised generating pdf using UseFrontEnd mathematica version info added Nov21 answered generating pdf using UseFrontEnd Nov21 comment generating pdf using UseFrontEnd this might help: superuser.com/questions/381807/… Nov16 comment Eigensystem, Eigenvalue doesn't output nonreal eigenvalues @jak N @ Eigenvalues @ F is the same as N[ Eigenvalues[ F ] ] and the same as F // Eigenvalues // N. So these are the three ways of using functions on some arguments. Nov11 awarded Teacher Nov11 answered Problem overloading D[] using UpValues Nov10 awarded Editor Nov10 revised Problem overloading D[] using UpValues added 132 characters in body