I often correct homework by checking the calculations in Mathematica. Sometimes you would like to have two solutions open at once. However often defined symbols such as ...
Is there some way to do this other than going to Evaluation -> Quit kernel and firing a new one up?
Here's a small listing where I've used EscqEsc to typeset θ in the notebook: ...
I have a list of global variables (some of them are indexed variables), for example: varsH = Hold[U0, U0, B0, V0, V0] Or (if it is easier to handle) ...
I know that this has been discussed here (How do I clear all user defined symbols?), but my case is somewhat different. How does one unload packages during runtime that were loaded with the start of ...
I have a function of two variables, e.g.: f[a_, b_] := f[a, b] = something f[a - 1, b - 1] etc With the above code I used the concept of memoization to speed up ...
I have a lot of variables: $a,b,c,d, \ldots $ I want to clear the values of all of them except $b$. It's really lengthy to write Clear[a]; Clear[c]; ... Is ...