4.11.2 Greatest hits from previous weeks

4.11.2.1 How to tell Mathematica that certain variables are real/imaginary, integer-valued, etc

http://mathematica.stackexchange.com/questions/66273/how-to-tell-mathematica-that-certain-variables-are-real-imaginary-integer-value

 
I'm trying to expedite some quantum mechanical calculations by running them through Mathematica. Expectation values and stuff like that. When I say, for example, 
 
u[x_] := Sqrt[2/L] * Sin[Pi * n * x /  ...
 

- asked by Matthew Brunetti (11 votes), answered by SquareOne (9 votes)

4.11.2.2 Where can I find examples of good Mathematica programming practice?

http://mathematica.stackexchange.com/questions/18/where-can-i-find-examples-of-good-mathematica-programming-practice

 
I consider myself a pretty good Mathematica programmer, but I'm always looking out for ways to either improve my way of doing things in Mathematica, or to see if there's something nifty that I haven't  ...
 

- asked by J. M. (460 votes), answered by faysou (404 votes)