For questions involving the application of the program Maple to mathematics. NOTE: questions which focus primarily on the program Maple and not on its applications to mathematics are not appropriate for this site.

learn more… | top users | synonyms

2
votes
1answer
164 views

Differentiation of a parametric function using MATLAB or Maple

I'm doing some mathematical calculation of some symbolic math that includes multiplication and differentiation of some matrices. Some of the parameters in my calculations are functions of time. for ...
1
vote
1answer
15 views

MAPLE- Developed in a Fourier Basis - Simplifying commands

After a succession of simplifying commands, I am trying to have a truncated serie Fourier of the expression T3. I get this kind of result T33 : [1] : ...
1
vote
1answer
54 views

Constructing a periodic piecewise (piecemeal) function in Maple.

I'm trying to make a piecewise function that will have period $12$. That is, it repeats every $12$ units across the $x$-axis. I managed to do one cycle successfully with ...
1
vote
1answer
38 views

Naming variables “_t3” from LinearSolve output in Maple 17

When I, in Maple 17, use LinearSolve in the package LinearAlgebra I get an result like <3_t3,_t3,-2_t3> Is it possible to tell Maple to name the variable ...
1
vote
1answer
164 views

Solving Poisson Equation Finite-difference using maple

How do I solving Poisson Equation Finite-difference using maple consider Poisson equation $$\frac{\partial^2u}{\partial x^2} (x,y)+ \frac{\partial^2u}{\partial y^2} (x,y) = x*e^y$$ $0<x<2$ ...
1
vote
1answer
67 views

solving the pde $U_t(x,t)=U_{xx}(x,t)-b(t)U(x,t)+q_0$ for $U(x,t)$ using maple

I have the pde $U_t(x,t)=U_{xx}(x,t)-b(t)U(x,t)+q_0$, where $b(t)$ is a function of only $t$ and $q_0$ is a constant, $0<x<\pi$, $t>0$. I also have some boundary conditions: $U(x,0)=0$ and ...
0
votes
1answer
41 views

Discrete Log Problem

I've been given this key for an elliptic curve crypto -system: A:=4569782456273849 B:=74578265973825694738 p:=164516845864567592349187678956932587156973824569837657473 So the EC group is ...
0
votes
1answer
34 views

Maple command for finding specific values that will make an inequality true

Is there a Maple command for finding specific values that will make an inequality true? For instance, if the input is $a<b,$ a possible output would be $a=1,b=2.$
3
votes
0answers
95 views

Maple code to Latex file

I am writing a project in Latex and have been using Maple to help calculate various things. I want to copy the code in maple and put it into the Latex file so it will still maintain the maple style ...
3
votes
0answers
77 views

Algorithm for generating random regular graphs in Maple

In Maples package RandomGraphs, there is a method called RandomRegularGraph(n,d) which takes a number of vertices $n$ and a degree $d$ and returns a random $d$-regular graph on $n$ vertices. Does ...
3
votes
0answers
152 views

Trying to solve Navier equations with Maple

I've been trying for ages now to get this to work, it's a system of partial differential equations (Engineering, Plate theory) $$pde1: = \frac{{{\partial ^2}}}{{\partial {x^2}}}u\left( {x,y} \right) ...
2
votes
0answers
54 views

Zeilbergers algorithm in Maple

I try to prove several hard combinatorial identities. One of them is following \begin{align*} \sum_{s=0}^{\min\{k,n-1\}} \sum_{i=0}^{k-s} (-1)^{i} {2n+k-i-1 \choose k-s-i} {i-n \choose s} {n+i-1 ...
2
votes
0answers
306 views

$\int^{\infty}_{0}x^{r +s- 1}(1 + x)^{-s}(1 + x^2)^{-\frac{rm}{2}}dx$

I'm trying to solve the integral $\int^{\infty}_{0}x^{r +s- 1}(1 + x)^{-s}(1 + x^2)^{-\frac{rm}{2}}dx$, where $s$, $r$ and $m$>1 are positive integers. My question is whether a closed form ...
1
vote
0answers
40 views

Matrix Multiplication in Maple

I am just trying to do simple matrix multiplication and for some reason the method I am using will not work. I have tried other float values in some matrices and sometimes it works so I'm at a loss ...
1
vote
0answers
33 views

Coding for a calculation in differential geometry using Maple

I am beginner in maple. And my field is Differential geometry. I've learnt lie brackets using maple help. But I am testing this calculation through maple. I have these vector fields $e1=z^2\ast ...
1
vote
0answers
43 views

Question about u term in graph-related posts

I am studying the solutions posted by Marko Riedel at http://math.stackexchange.com/questions/689526/how-many-connected-graphs-over-v-vertices-and-e-edges. I am porting some of the techniques listed ...
1
vote
0answers
53 views

solve complicated system of non-linear equations numerically

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} ...
1
vote
0answers
29 views

simplex in MAPLE

I am trying to solve a large system of linear inequalities (about 500 variables) subject to the nonnegativity condition on the variables.Call this system500 for future reference. I do not need to ...
1
vote
0answers
54 views

Why Maple fails to judge $x < \tan(x)$ assuming $0<x<\pi/2$?

I am using maple to verify an expression, $x < \tan(x)$ for $0 < x < \pi/2$, but it returns FAIL, i.e. is ( x < tan(x) ) assuming 0 < x < Pi/2 ...
1
vote
0answers
108 views

Solving the General Equilibrium with $4$ equations and $4$ unknowns

I have to solve four equations to solve the equlilibrium prices for the two countries: $\frac{2p_1}{w_1} + \frac{p_1}{w_2}= \frac{48w_1^2 + 4p_1^2+p_2^2}{8p_1w_1}+ ...
1
vote
0answers
148 views

Change of variables in differential equation in Maple

Consider the differential equation $zZ'' + Z' + \alpha^2Z = 0, $where $Z = Z(z).$ Use the change of variables $x = \sqrt{z/a}$ with $a$ a constant to obtain the differential equation $Z'' + (1/x)Z' ...
1
vote
0answers
72 views

what is the algorithm to calcuate max and min in piecewise function

maple code convert(max((2-x)/3, x+1), piecewise); convert(min((x+1)/3, 1-x), piecewise); i feel that above command is very powerful and complicated, and would ...
1
vote
0answers
128 views

How to get a symbolic answer

I am coding some optimization problem in Maple, and actually I did something and got a numerical solution. Right now I want to do the same thing but need to get the symbolic answer. The problem I have ...
1
vote
0answers
75 views

Put a value to a variable in Maple

I have these commands and I would like to put a value 2.02682872387444 from table to a variable for example a. How can I do it? DR1 := diff(x(t), t) = 100*x(t)-3*x(t)*y(t) DR2 := diff(y(t), ...
1
vote
0answers
164 views

Plotting characteristic equations maple

I'm trying to plot the characteristics for the following PDE with initial conditions: $$u_t +uu_x =0$$ where $$u(x,0)=a \ for\ x<-1, \ b\ for\ -1<x<1, \ c \ for\ x>1.$$ I'm first ...
1
vote
0answers
47 views

Displaying $2 \cdot 10^5$ as $200000$

How can I in Maple write out the number $2 \cdot 10^5$, so it displays the full number with all digits: $200000$? By typing increasing zeros I can test Maples treshold, and I get: $20$, $200$, ...
1
vote
0answers
217 views

maple code for exp-func. for solving PDE's & non-linear ODE's?

How can I create the Maple code using exponential-function solving the equation below? $u_t = \gamma u_x+6u(u_x)^2+(3u^2-1)u_{xx}-u_{xxxx}$ $u_t =u_{xx}-u^3+u,$ $\alpha u''(x) = \beta ...
1
vote
0answers
204 views

How to derive to inverse z transform of $\sqrt{\frac{1-a^2}{1-\frac{a}{z}}}$ from Laguerre differential equation?

How can I derive the inverse z-transform of: $$\sqrt{\frac{1-a^2}{1-\frac{a}{z}}}$$ If Maple is not the way, how to derive manually? With Maple code I encounter some problems ...
1
vote
0answers
146 views

recurrence relation of general difference polynomials

I have a sequence of difference polynomials (which I obtained by the method of finite differences) and I would like to find out if there is a recurrence relation between them. The generating function ...
0
votes
0answers
31 views

probability of collision approximation,matlab,maple

I'm working in the field of communication network. I have this equation p=((1-(1-(((2.*(1-2.p))./(1-p-p.(2.p).^m)).(1./Wi))).^(n-1))) I want to solve for p, but I failed(maple and matlab), can ...
0
votes
0answers
34 views

Maple problem HELP

I am new to maple and I need help. Let x=x(t) and y=y(t) be functions in t. Suppose that x'=2x−5y+t and y'=4x+9y+sint such that x(0)=y(0)=0. Find y(1). How do I go about doing this question? ...
0
votes
0answers
39 views

Maple, solve coupled differential equation

I'm having trouble getting maple to dsolve this coupled differential equation. When I try to solve it, it gets stuck in evaluation and freezes. Is it possible to get an answer as a real decimal ...
0
votes
0answers
19 views

Verifying the Divergence Theorem with Maple - concrete example

Let $\mathbf{F} = x^2 \hat{i} + y^2 \hat{j} + z^2 \hat{k}$ be the flux outward across the boundary of the solid ellipsoid $x^2 + y^2 + 4(z-1)^2 = 4$. I now want to verify with Maple that the ...
0
votes
0answers
15 views

Export 3d plot in Maple

I have drawn a 3d plot of a sphere in maple, but when I try to export this one in an .eps file, only the coordinate system is shown, but not the colourful plot. The export works if I use jpg and ...
0
votes
0answers
16 views

Empty result set on `pdsolve` in Maple

I'm trying to solve the following: $$ U_{xy}=\sin (x) \cos (y) $$ given boundary conditions $u_x(y=\frac{\pi}{2})=2x$ and $u(x=\pi)=2 \sin(y)$. I'm feeding these into Maple as follows: ...
0
votes
0answers
16 views

Maple — Lattice Algorithms

Is there any place online where I can find the code for an algorithm which computes the shortest vector in a lattice? The library only includes the algorithm for LLL.
0
votes
0answers
63 views

Maple produces only errors

I have Maple 18 installed on linux. I've been following the guide and I got to a point where I'm suppose to right click 2*x-9=0 and solve for x. This fairly simple ...
0
votes
0answers
23 views

how to test whether cobordism exist between two manifold or two system of polynomials

from wiki Every simply connected, closed 3-manifold is homeomorphic to the 3-sphere. from book geometrisation of 3-manifolds ...
0
votes
0answers
22 views

Change of variables in maple

I am trying to perform a change of variable as follows in Maple: and I can't get the third term substituted properly. Is there something I'm doing wrong?
0
votes
0answers
63 views

Graphing the sum of a Fourier series in Maple

Periodic function: $g(x) = -1$ if $-2 < x < 0$ $g(x) = 1$ if $0 < x < 2$ Find the Fourier series representation of g(x) My work: I found that the ...
0
votes
0answers
47 views

Mathieu characteristic function for non integer value in Maple

In Maple the Mathieu characteristic function can only evaluate integer values. But in Mathematica it can take non-integer values. And I have test that the integer values from both system seems ...
0
votes
0answers
56 views

How to solve a system of first-order partial differential equations?

I have a system of first-order partial differential equations. \begin{align} & -\frac{a}{a_1} \frac{\partial P_{12}}{\partial a} - \frac{a b}{a_1 b_1} \frac{\partial P_{12}}{\partial b} + ...
0
votes
0answers
29 views

Solving a system of equations involving matrices in Maple

I have a system of equations involving matrices which I would like to solve symbolically. The system has multiple equations like this: $\begin{pmatrix} x_{1,1} & \dots&x_{1,7}\\ \vdots & ...
0
votes
0answers
107 views

How to eliminate functions from a set of differential equations with Maple?

I've got a set of 7 equations, 3 of them being differential equations, with 7 unknown functions. I'd like to reduce the system to a set of 2 differential equations by eliminating 5 of the unknown ...
0
votes
0answers
108 views

In Maple or Mathematica, syntax : Finding the fundamental sol. of the Heat eq., with Dirac-Delta initial condition

I use this question as a case example for later solving more complex equations of this type : When trying to find the fundamental solution of the Heat equation using Maple (software) , I get the ...
0
votes
0answers
64 views

Galios Field Theory

$GF(29)^2$ is created by adjoining the root of the irreducible quadratic $p=x^2+7x+15$ to the field $GF(29)$ . The cubic polynomial $q=Y^3+(26x+26)Y^2+(8x+22)Y+13x+23$ is irreducible over this new ...
0
votes
0answers
117 views

SIR models - help!

I am doing a project on the spread of infectious diseases and I have chosen to model this spread by using the SIR model - (susceptibles, infectious, recovered). I have to insert data into this model ...
0
votes
0answers
36 views

Can Maple solve recurrence relations when n is only certain numbers?

If you have an equation $a(n)=a_{n-1}+2a_{n-2}$ only defined when n is powers of 2, how would convey that to Maple that n has a restriction? What if you wanted only $n \ge 2$?
0
votes
0answers
103 views

How can I use rationalized haar functions to solve differential equations?

How can I use rationalized haar functions to solve differential equations? I do not have any idea what are haar functions and how to use them please help!
-2
votes
0answers
28 views

3d animation of a marble inside ellipsoid

I am new to MAPLE, I have been using Mathematica mostly. Here is what i am trying to do in MAPLE, Use the procedure plotmotion 2 on the plotmo worksheet to animate the motion of a marble in a bowl ...