Questions tagged [maple]
Questions about the computer algebra system Maple.
24 questions
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Running algorithms in package EKHAD in Maple [closed]
The EKHAD package from the book A=B contains many effective algorithms. I want to use one of them in Maple, but I have troubles with the command read.
I saved the ...
0
votes
1
answer
302
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Finding total derivative of a multivariate function in Maple
In Maple, I have a function $f(x(t),y(t),t)$ that I want to differentiate with respect to $t$. I know the command for partial derivative $\frac{\partial f}{\partial x}$,$\frac{\partial f}{\partial y}$,...
- 11
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0
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34
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Conserved current for a 1d oscillator using Maple
I found out the conserved current for harmonic oscillator with angular frequency 1, particle falling in gravity close to ground ($g=1$) using maple. I'm unable to understand the result:
$$J[t](t, x(t)...
- 11
-1
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1
answer
30
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How to Collect fraction in Maple 18? [closed]
Suppose I have
$$f=\frac x 3+ \frac y 3 +\frac z 3$$
And I want to use
collect(f, 1/3)
And I wish it will displays
$$f=\frac1 3(x+y+z)$$
But it doesn't work....
- 141
1
vote
0
answers
51
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Second fundamental form - Maple
I would like to know the command/line in Maple 16 or similar to obtain the second fundamental form tensor for a given metric. I've managed to obtain Rienmann and Ricci tensor, even Weyl, but I can't ...
- 11
1
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0
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46
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Maple: patmatch does not identify patterns inside diff() operator
I understand that the function applyrule uses patmatch to identify patterns and apply transformations accordingly.
Suppose, I ...
- 11
1
vote
1
answer
394
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solution of system of coupled partial differential equations [closed]
I have following system of coupled Partial differential equations.
How can I solve the system by Maple?
\begin{align} m_1\frac{\partial^2 u_1}{\partial t^2}+A_1\frac{\partial ^4u_1(x,t)}{\partial x^...
- 121
1
vote
2
answers
174
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How to deal with big numbers in intermediate calculations?
I have a rather long expression (https://pastebin.com/jUsxdCCs) that is an analytical solution of a set of differential equations generated symbolically from Maple. I need to solve a set of equations ...
- 143
2
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1
answer
145
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Symbolic convex analysis toolkit for Maple
I'm looking for the SCAT (Symbolic convex analysis toolkit) for Maple written by Hamilton and Borwein.
I have seen some references in the specialized literature than mention some urls. However, the ...
- 171
0
votes
1
answer
298
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How to increase precision of Gauss-Legendre Quadrature in MAPLE? [closed]
I've written a simple legendre quadrature in MAPLE to compute the integral
$\int_{-1}^1 r^2 dr = \frac{r^3}{3} |_{-1}^1=\frac{2}{3}$
...
- 289
0
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1
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3k
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Solving Time dependent Schrodinger equation using MATLAB ode45 [closed]
The Schrodinger equation for time-dependent Hamiltonian is
$$i\hbar\frac{d}{dt}\psi(t) = H(t)\psi(t) \, .$$
I try to implement solve the Schrodinger equation for time-dependent Hamiltonian in ODE ...
- 179
2
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1
answer
1k
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Defining Cauchy principal value in MATLAB (or Scilab/Maple)?
How to define a variable which is an integral involving cauchy principal value inside in any computer programming language? I want to know how to break down the procedure step by step from a ...
- 179
1
vote
0
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111
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Error norm in maple
I have the function $cos(x+t)$; the following PDEs have $cos(x+t)$ as the analytical solution of them:
$$u_t = u_{xx} -\sin(x+t) + \cos(x+t) \\
u_x(0,t)=-\sin(t) \\
u_x(1,t)=-u(1,t)^4-\sin(1+t)+\cos^...
- 181
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2
answers
587
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Looking for a matlab/maple code for plotting the truncation error
On page 18 on this text: http://www.dima.uniroma1.it/users/lsa_adn/MATERIALE/FDheat.pdf ,
the graph in figure 8 on this page, how would I write a suitable code in matlab or maple that will produce ...
- 181
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3
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2k
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Benchmarks for Gröbner bases and polynomial system solution
In the recent question Solving system of 7 nonlinear algebraic equations symbolically, Brian Borchers experimentally confirmed that Maple can solve a polynomial system that Matlab/Mupad cannot handle. ...
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1
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62
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CAS Problem with integrals
I got this problem thrown at me, unfortunately I lack context at the moment but I thought Maple or Mathematica would solve it anyways.
I have a function $f$ over $x$ and $y$ such as this (Maple)
<...
- 111
0
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1
answer
163
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Solving differential equations in MAPLE (ballistic curve problem) [closed]
TASK:
Make a simple animation of an object shot from a catapult. Object is moving through a medium. The problem must be solved in MAPLE.
NARROWING OF THE PROBLEM:
2D problem
consider atmospheric ...
- 1
3
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0
answers
107
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Bracket Algebra, Straightening Algorithm
My apologies if the question is simple. I need to write a code for straightening algorithm. Which includes defining bracket algebra. I tried to write it in CoCoA-5, but it wasn't possible because ...
1
vote
2
answers
4k
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Determine unit outward normal vector for a curve
It is necessary for me to find the unit outward normal vector for the curve:
$$\gamma=(x(t),y(t)) $$
where
$$x(t)=\cos(t)−0.5\cos(3t)$$
and
$$y(t)=\sin(t)+\sin(7t)+\sin(3t)$$
I know how to find ...
- 533
1
vote
1
answer
90
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Maple stored variable to be read into Matlab
I have a a function $f(k)$ (calculated in Maple) which is huge and stored in a variable called 'sum' on my drive (with the help of 'save' command in Maple). Since the function is huge, Maple is unable ...
- 59
2
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1
answer
87
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Solving a pair of high-degree polynomials in two variables with Maple
I have two algebraic equations I am trying to solve in Maple. They are:
$14\,{a}^{26}{b}^{2}-91\,{a}^{24}{b}^{4}-364\,{a}^{22}{b}^{6}-1001\,{a}
^{20}{b}^{8}-2002\,{a}^{18}{b}^{10}-3003\,{a}^{16}{b}^{...
- 59
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2
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695
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Open source linux Maple Worksheet Interpreter/Converter?
I bought a book where the exercises are given in Maple worksheet format (.mw). Is there an open-source software in Linux able to interpret or to convert this specific file format ?
- 193
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1
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1k
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Symbolic Computations with Block Matrices in Maple
Due to the derivation of an algorithm I tried to use Maple (9.5) to calculate some block matrix expression. Unfortunately Maple seems to ignore the assumption I set on the variable. Lets consider the ...
- 726
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1
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Explicit scheme for heat equation with Neumann boundary conditions in Maple
$\displaystyle \frac{\partial u}{\partial t}=\alpha(x,t)\cdot \frac{\partial^2 u}{\partial x^2}+b(x,t)$
$u(x,0)=f(x)$ Initial condition
$u_x(0,t)=0$ 2nd type Boundary condition
$u_x(1,t)=0$ 2nd ...
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