# Items tagged with mathmath Tagged Items Feed

### Psuedo Convolution and too many levels...

November 09 2010 by

0

1

Why does:

G := Heaviside(x): int(G(x)*G(t-x), x = 0 .. 3);

Produce a "Error, (in unknown) too many levels of recursion"?

### Error message when trying to plot graph

November 01 2010 by Maple 13

0

2

Hi!

I'm sure there is a simple solution to my problem, but because I'm fairly new to using Maple, I can't figure out why my graph won't work. All I'm trying to do is graph a function along with its first and second derivatives within the same graph. The original function is f(x)= (2+sinx)^x2/(x2+1).

I defined the function as f and then found the first derivative by using df:=D(f...

### CDECL option in define_external

October 28 2010 by

External calling functions from Windows dlls in Maple uses __stdcall calling convention.

Most Windows dlls including <windows.h> are using that convention (called also WINAPI). However, C runtime dll (msvcrt.dll) and most mathematical dlls - such as gsl, PARI, etc. which would be very useful, are using __cdecl calling convention and functions from them can not be easily called from Maple. One has to create a wrapper dll with __stdcall calling convention for that. In particular, Axel Vogt did that for a part of PARI.

Would that be possible for Maplesoft developers to add option CDECL in define_external in Maple 15 allowing calling C library functions and functions from gsl, PARI, etc. directly from Maple, without a burden of writing __stdcall wrappers for them first?

### Deriving differential equations of motio...

October 23 2010 by

1

1

I'm new to maple and am evaluating it as a means of deriving symbolic equations of motion for a system comprising two flexible bodies sliding relative to one another and rotating in 3d space using the Boltzmann Hamel equations.  I have written up the approach but the maths is extremely tedious by hand so I wondered if maple could help.  For  a start how do I define a simple indexed 3 element vector and then create the skew matrix equivalent (tilde matrix) as...

### My experience with Maple

October 22 2010 by Maple 14

My first touch with Maple was in 1997,when I was in my undergraduate course.The software of maple was in three floppy disk.

Since 2000,I becomes a teacher for mathematics .Now I am using it to compute the integrate,limits,etc.

To the world you may be one person,but to one person you may be the world!

### CANDECOMP/PARAFAC: images as tensors...

October 16 2010 by Maple 14

6

2

This post is a further development of my earlier question in reply to John's post. I have implemented a basic version of the CANDECOMP/PARAFAC algorithm referred to on Wikipedia and described

### Decompose a third order tensor into...

October 01 2010 by

4

3

If you construct the tensor product W of an m- and an n-dimensional vector space, U and V, then you can view the elements of W as m by n matrices (by picking a basis for U and V). The rank one matrices are the elements that can be written as the tensor product of (nonzero) vectors u in U and v in V; this corresponds to writing the matrix as u

### Is there a way to keep the same color...

September 29 2010 by

2

2

I always change text color, and I want the color in math mode to be the same as the text mode.  Is there a way to do this automatically?  The math mode always comes up in black, even if the previous text was red etc...

Thank you.

### Grading code not simplifying properly......

August 19 2010 by Maple T.A.

1

2

Hi,

I've recently started creating questions using MapleTA, and at the moment I've hit a stumbling block.

For a particular question, the students need to enter a formula. When I input the answer in decimal form, the question is graded correctly; when I put it in fractional form, it's not. I've used the simplify command in every perturbation I know, but I can't get it to work.

More details:

Algorithm

### Generating Samples from Custom Probability...

August 14 2010 by Maple 14

8

3

 This is the fourth and final part of a blog post, the first three parts of which can be found here: Generating Samples from Custom Probability Distributions (I)

### Generating Samples from Custom Probability...

August 12 2010 by Maple 14

5

0

This is the third post in a four-part series; the earlier posts are Generating...

### Mixed Fraction Question

August 11 2010 by Maple 13

1

2

Hello! Im kinda new to maple so it must be a noob question :) im using it for like 24 hours to get around some basing math in it :)

Just got some understanding of this 2d/1d/worksheet/document modes and stucked at some operations with fractions.

1) How do i enter Mixed fractions to calculate right?

2) How to compare Two or More fractions?

3) How to get output in mixed fractions? or to expand fractions.

### Generating Samples from Custom Probability...

August 09 2010 by Maple 14

9

0

This is the second post in a four-part series that started with this post: Generating...

### Generating Samples from Custom Probability...

August 06 2010 by Maple 14

9

1

Maple's Statistics package contains many predefined probability distributions; well-known ones such as the normal distribution and lesser-known ones such as the Gumbel distribution. For these distributions, we ship efficient algorithms that can quickly generate a large number of sample points. To generate a sample of size 106 of both of these distributions, and print the time it took to do this (in seconds), you can run the following:

with(Statistics):

### Problem with a taylor/series expression

July 26 2010 by Maple 13

0

2

Hello all,

I have a little problem with an expression I have to develop in taylor/series.

Here it is:

I want to develop it in "nu", giving that "nu" is a small parameter, and it says that it doesn't exist a series expansion.

But when I can obtain the series expansion of the "sqrt" part only of the expression, which yields:

 3 4 5 6 7 8 9 Last Page 5 of 34