Has anyone else experienced display problems of mapleprimes messages? It's happened to me at least 5 times in just a few days, with both firefox and internet explorer. This is what I see there:

http://www.mapleprimes.com/questions/126572-Matrix-Question/

Sometimes "editing" the message helps in seeing what's inside, but not this time:

Assume that we have a vector-function:

Hello there, 

I have been having trouble removing elements from a list using the subsop tool.

I have a list A containing smaller lists of 2 values (A=[[0,1],[2,2],[4,5],[-1,-2], ... ]). My goal is to set boudaries to these sublists such as if the "y" (second value in any sublist) value is greater than 3, remove it from the list. here is what my code looks like

for i from i to n do
  if evalf(op(2,op(i,A))) < 0 then 
    subsop(i=NULL,A);
  fi;
od;

How to debug external DLL? IDE - MS Visual C++ Express 2010

After calling define_external from maple library succefully loaded. But how to unload it without closing maple? For example want change library file to new one.

I put Celsius in my equation and I get the wrong answer even though I've loaded the Units Package:

Download 25-25not_work.mw

I have to put in the conversion to Kelvin by myself to get the right answer:

Download 25-25_works.mw 

What am I doing wrong?

Thanks ahead of time!

Edo

Dear guys!

I'm solving an equation and then by its results I solve an integral, but I'm doing that for many initial conditions in a for loop. The problem is that when I change the limits of loop (or initial conditions) the result of integral in two for loop for a same initial condition are very different. What's the problem?

Thanks!

Hey guys,

I have the function f(x) =(sin(x) + 1)/(x^2 + 1) where x =-Pi/2 and 3Pi/2

1) I first set up an intgral for the function:

How can we get a color scheme that is stationary while object is rotated?

I'd like to shade an object in 3d but as I rotate it have the color scheme remain adjusted to a secondary set of axis.  Almost like a plot within a plot, rotate the inner plot with a color scheme relative to the outer plot axes.  An observer based color scheme I suppose is what I'm asking.

I suppose it would be similar to the way lighting schemes work, light from a specific...

Hello,

I would really appreciate some help. I am trying to use maple as a document of engineering analysis and calculations (like I would do in MathCAD), can maple handle such things. I seem to be having problems with the formatting. For example my units and outputs seem inconsistent, where am I going wrong. I have uploaded a file belwo for some advice please.

Also when I define a variable and then change the variables value can I get all the equations which...

Dear guys! Please look at the two following ways to solve a same equation and tell me why the results are different:

The initial conditions and the equation for both ways are:         m := 0.22: k := 0.03: n := 0.35: h := 0.63:

> eq := z-> 1=(m*(1+z)^3-k*(1+z)^2)*h^2/(H^2)+(((2*n-1)-(k*(1+z)^2*h^2/H^2))*((1-m+k)/(2*n-1+k))*((((H^2/h^2)-k*(1+z)^2)/(1-k))^(n-1))):

The first model:

> yp := implicitdiff(eq(z), H, z):

Hi

When I export my MapleSim 5 results to a CSV file, I get only 6 digits, I'm looking for effects in the 1/1000 ppm or ppb region, I'm lost here

The global Settings window allows me to adapt epsilon abs and rel, thats nice, but nothing on the data export side.

I find it logical and usefull to have a settings on the export tab to decide on precision, and or selection of time series (usefull if one does not want all data, but just the last 100 values of a loooong run ;)

Dear MapleSim users

How can I get a display block / digital meter ? I want to display the last (or at a triggered time) the numerical value of a point/connection of a system.

I do not need the full graph of the "probe just the one value. It's mainly for debugging purpouse, to have a few check points once run.

The probes are nice but sometimes you want just a number not the full graph ;)

Does anybody have a trick ? Or could the probe plot item...

So, I do the following calculation and all is well

Units_Package_righ.pdf 

I close Maple, it asks me to save and I do.  Then I open the worksheet again and push the "!!!" button and I get

Units_Package_wron.pdf  

The calculation is done without the benefit of the units package.

Hi:

I have three lists: [x],[y1] and [y2] and want to plot y1 and y2 against x.

The command

pointplot(x,y1) gives me what I want for y1 and

pointplot(x,y2) gives me what I want for y2, BUT

I can't figure out a way to put y1 and y2 on the SAME plot against x instead of two separate plots.

There must be a way... any suggestions?

Thanks.