Daniel Lichtblau questions

Daniel Lichtblau answers

• How to calculate and plot instantaneous phase in Mathematica
• Mathematica function turns red, does not work
• How to improve ( mathematica ) performance when dealing with recursive functions?
• Quadratic programming in Mathematica
• Solve non-linear system of equation in Mathematica
• Replace expressions with their names in Mathematica
• Utility to extract variables from an expression
• Map (/@) behavior
• Using uncertainty accuracy
• How can I reference a specific point of my function inside NDSolve?