2.7.3 Can you answer these questions?

2.7.3.1 Time complexity to choose the right overload from the memoized function

http://mathematica.stackexchange.com/questions/95399/time-complexity-to-choose-the-right-overload-from-the-memoized-function

 
If we want to save some outputs of the function, we often use the memoization pattern as follows, 
 
f[x_]:=f[x]=x 
f/@Range[10^5] 
 
 
If I call this function many times for different arguments,  ...
 

- asked by Sungmin 7votes

2.7.3.2 Diagonalisation of equations for NDSolve

http://mathematica.stackexchange.com/questions/95383/diagonalisation-of-equations-for-ndsolve

 
I have a linear matrix differential equation and I wish to speed up evaluation by diagonalising using eigenvectors. There is an example in Help for finite elements under "swinging beam" that is  ...
 

- asked by Hugh 2votes

2.7.3.3 TableDirections example produces an error message

http://mathematica.stackexchange.com/questions/95321/tabledirections-example-produces-an-error-message

 
Bug introduced in 10.0 and persisting through in 10.2 
 
 
 
Can anyone replicate this?  In Mathematica 10.2 on Win 64: 
 
TableForm[{{a, b}, {c, d}, {e, f}}, TableDirections -> Row] 
 
 
I get the  ...
 

- asked by Alan 9votes

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