Hello
Yesterday I was playing around with the Tolerances package in Maple 12. To familiarize myself I with it I tried to work out the equivalent resistance of two parallel resistors with tolerances.
R1:=80.0 +/- 4.0 [Ohm]
R2:=120.0 +/- 6.0 [Ohm]
Maple returned: Req:=R1*R2/(R1+R2) = 48.5 +/- 7.22 [Ohm]   (rounded values, there is some weirdness going on with this also.)
The right answer should be 48 +/- 2.4 [Ohm].

Dear Maple users

I read somewhere that plots with units is new in Maple 13. There is however something which is not working well:

> restart:
> T:=30 [[year]]:
> A0:=370000[[Bq]]:
> A(t):=A0*(1/2)^(t/T):
> plot(A(t), t=0..100[[year]])

I expected to see a plot of an exponential with units. A coordinate system was displayed but no function plot!! Can someone explain why? If I remove the units, the exponential appears!

Regards, Erik V. 

Download 16210_convection1.mws
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I am try to write the solution in latex but its too long. Can any one help me to use some maple commads to write the solution in a compressed form.

Thanks

Hello,

 

I've got a big file "file.mw" written in Maple12, which is OK, since I own Maple 12. Unfortunately it is totally in Math mode and all in one single group, i.e. of the form

 

> first line;
   second line;
   third line;
   ....

   last line;
>

 

(keep in mind that there are only two ">" s).

I have maple 13 for Mac OS X version 10.6.2. Initially maple worked fine but suddenly it didn't seem to recognise keyboard shortcuts. Then when saving a worksheet all it did was save a blank one. Later it threw out a couple of two dimensional blue lines when using PDEplot. And recently it won't export any plots. In short maple is even wore than windows (and thats saying something).

Dear Friends,

I have Maple v9.5 on my laptop. I would like to know how to take the inverse cosine and sine transform of a function.

Since I am using Integral Transformation to solve PDEs, it is of great importance to me.

Best,

Maziar

How can I round off the numbers in a random array or matrix?  Round or Trunc will not work on a random number.

with(ArrayTools):
a:=30*(ArrayTools:-RandomArray(8,8));

 

I replied to the following thread but after further thought I probably start a new thread:

http://www.mapleprimes.com/forum/multivariate-directional-derivative-0

hey all

I want to write an algorithm similar to this but instead of ''w1:=a+h''   I have to put about 75 commands. how can i do this?

 

Can someone help me please?

 

Hello all!

I am an Open University student just starting with Maple 11. I am studying the course MS325 Computer Algebra, Chaos and Simulations and we have to use the classic interface.

I use Fedora 11 Linux on my Acer Aspire One netbook. I have loaded Maple 11 for Linux, and the standard version opens OK by using ./xmaple

But if I try to open the classic interface with ./maple -cw

I get this:

I know it is possible to change the "Look and Feel" of Java applications, and i was wondering if there was any way to do this on Maple? (Maple 13 for Linux, to be exact.) 

What am i doing wrong?

 

> restart;
>
> g := .2189750324;


> m2 := 1;

> a := 1;

> c2 := -1;

> equation2 := y = m2*X+c2; 

> area1 := int(equation2, X = g .. a, numeric);

Error, (in int) invalid arguments

 

Can i make an algorithm like this in maple?

w= 4

for k= 1 to 10 do

             for h = 1 to 20 do

                      for a = 4 to 15 do

                               w1= a+hk

Objective: plot a graph from data drawn from two arrays. I would like to have the data points marked with a symbol (point, circle, or diamond, etc.) on the graph. How do I do that? Following is the code: -- two arrays of data point: engineeringStress and epsilon(engineering strain) -- Zip is used to put two arrays into data points (x,y) to create stressStrainData -- plot is used to graph The plot shows a line; I would like to have the data points marked (visibly seen) on the graph. Thanks. --mdc > restart; > with(plots); with(plottools);