Many times, I can create the drawing for physics problems. But sometimes, it is just too lengthy to do. And the tools are limited. For example, you cannot draw an arc circle to represent the angle between two vectors. You can look at a simple drawing that I made (see included document). You will see that to draw the rotation vector that shows in what direction the axis rotate. I had to draw it with the pen and this is never beautiful. So if someone knows of a pretty good software (free is even better but at least not too expensive), I would really appreciate.

3-D_rotating_axes.mw

How should i remove all brackets and conditions, such that i can fetch only equation t2 = something. I am attaching the image below.  

Used to know, I think.  How do you convert a Matrix to an image?  I want to use the PadImage command from the ImageTools package.

Here is a notional example of a user defined  Probability Distribution:

• One of the "attribute" or "property" (sorry but I don't know the correct word to use) in any known distribution (that is already implemented in Maple) is Parameters: an example is  provided for a Gaussian RV.
   
• In a first stage I define a simple Distribution named MyDist and declare X as a random variable of distribution MyDist.
   
• Then I decide to complete the definition of MyDist by adding the "property" Parameters.
  I get an error I don't know how to get rid of.

Does anyone has any idea to fix that ?

PS: I browse the Statistics library to try and understand how this "property" is defined for a known distribution but I couldn't find any clue.

Thanks in advance.

Download RandomVariable_Parameters.mw

Hi every one

How do I automatically change the polynomial ring R=K[x1,...,xn] into the quotient ring R/I when I is a homogeneous ideal of degree d in R?

For example, let I be a polynomial ideal generated by [x-y, x^2+y^2+z^2] in R=K[x,y,z]. In the middle of the computations, the ideal B=[x-y] is computed and now we have to continue the calculation at the quotient ring R/B. How does change R into R/B automatically in Maple and then [x^2+y^2+z^2] changes into [2y^2+z^2] and K[x,y,z]/[x-y] ----> K[y,z]?

Thank you in advance.

Just wonder if there are any known issues when using dots in Maple code attachment names?

Only issue so far that I can see is that error messages are split a bit strange.

How can i plot stream lines by using velocity components (tx+1, -ty-t^2)? or by stream function?

how can i sort [x,x/3] to [x/3,x]

sort([x, x/3]) ?

I looking to create a GUI may be from outside say script language or any given language may be 

The main intention is I have my

maple code

And 

A python code

In the same folder say

I create a GUI with two buttons

When I click one button it runs my maple file in that folder and generates the output

Second button runs the python file that folder generates the output

Is such a coding  creatable 

One more import is can we call a maple code to run from python like how we call exe files

And 

Can we call python compiler attached and file from maple and run it 

I need help to solve this ODE,

I didn't get series values F(k+3),Theta(k+2),phi(k+2),error comes in summation values.and

How to find the unknown parameters A,B,C.

 TLF.mw

Please why does 

roots(x^5 - C__1*x^4 -C__2*x^3 -C__3*x^2 -C__4*x +C__5, x);

returns  [ ]?

How can I animate the revolution surface around the red line?

RevolSurfaceQ.mw

Hi every one

Let F=[f1,...,f10] be a  list of homogeneous polynomials with different degrees. I want to create a list of lists s.t. any list satisfies the following conditions:

1. all elements of a list have the same degree.

2. the lists contained in the main list sort increasingly.

For example if F=[x-y, y+z, x^3-xyz+z^3, y^3-xz^2, y^6-x^4y^2, x^5y-z^6+x^2y^2z^2] then 

L=[[x-y, y+z],[x^3-xyz+z^3, y^3-xz^2],[y^6-x^4y^2, x^5y-z^6+x^2y^2z^2]] is the output.

Thanks for your answers.

It would be nice to have a point probe for images ie.pixel location. 

Maple code for solving system of ODE using forward-backward sweep method.