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These are questions asked by casperyc


Say if I need a^T * b * a, I will do this:

VectorMatrixMultiply(Transpose(a), b);
VectorMatrixMultiply(%, a);

But this seems too long for such a simple matrix (and vector) computation. I am sure there must be an short way.

What if I need more computation, like


a^T * b * c*d*f*g* a, where c,d,f,g are other 2x2 matrices.
 If I were to use the above command, that'll take a long time to input.




What I hope to get is a vector with i-th entry being the dervative of f, differentiated w.r.s.t the i-th parameter, like this



Is there a more efficient (built-in) command to do this?


VectorCalculus[diff] does not do what I want.






Hi all,


Sorry if the question of the title wasn't very clear. I am not sure how to express it correctly.

But here is what I do for linux,

and I get


So when I submitted a lot of jobs, I can see the arguments that was passed to it. I can easily kill a process.


How do I do that in windows if anyone knows?

Here is a screenshot from windows task manager:


That does not give informative details, just like the 'top' command in linux.



Say I have




each of them can be ran seperately. While I am running a single file, it looks like that the machine is not "using" too much computation power. I wonder if it's possible to run multiple at the same time ?

My CPU is i7 940X, with 4 dual core processors, so it has 8 threads.

I know that the GUI can run multiple worksheets seperately, but if in one of the worksheet, i click "run all" (!!! botton),  I will have to run each line separtely by clicking one at a time.

Is there a better way to do this? What's the best way to do this? I hope to somehow 'maximize' the full use of my CPU (without changing the code).




I am connected to the linux version of Maple (xmaple) via putty and Xing (for GUI).

While the "big" code is running, I sometimes I got these messages,

But Maple (xmaple GUI) keeps running. It looks like it does not have an effect.


Should I be concerned?

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