## 118 Reputation

11 years, 24 days

## Second Derivative Using 2D input...

Maple

In 2D input it is possible to represnet

diff(f,x) as d/dx f

Is it possible to do

diff(f,x,x) as d^2/(dx)^2 f somehow?

## Solid Symbols in plot devices....

I need to plot solid sqaures and include the figure in a paper.

The plotdevices jpg and ps do NOT support this. Is there a special way to put solid symbols in these? What plot devices support solid symbols?

## maple produces blank pdfs from exported ...

Maple 14

I have a maple worksheet with 2d input:

> for i to 10 do f := proc (x) options operator, arrow; x^2 end proc; f(x) end do;

of course it looks "pretty" in the actual worksheet.

When I export this to Latex I get the standard stuff and this:

\begin{maplegroup}
\begin{mapleinput}
\mapleinline{active}{2d}{for i to 10 do f := proc (x) options operator, arrow; x^2 end proc; f(x) end do; -1}{}

## help migrating old maple code with "stat...

Maple

Can anyone help me convert this outdated maple code into something current? Particularity I need help finding the equivalent command to "stats:-empirical" as I can't even find documentation for it.

with(stats): with(linalg): with(StringTools):

P1:=matrix([[.6,.3,.1],[.4,.5,.1],[.3,.4,.3]]);

j:=1:  res:="S":

for i to 50 do

j:=random[empirical[op(convert(row(P1,j),list))]]():

## get the old "?" (man page) functionality...

Maple
I'm running OSX and Maple 14. Now when I do ]>? mod for example it (maple) is launching a Maplet (which crashes) in order to do something (perhaps bring up a Java version of the docs?). How do I disable this and get the old (text based) man pages back?
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