So I'm new to Maple and I have a homework problem that says:

"Write x^3+x^2+x+1 in terms of powers of x-1 using the taylor command."

Honestly I have no idea where to even start, any help would be awesome.

Thanks,

Andrew

Newbie question, please help.  I'm getting a little frustrated with Maple 13; read on-line help but don't seem to find the pattern for my problem.

Symptoms:

Type: exp(-t) + t

Highlight on the expression, right click on Plot. I got a plot.

Type: plot ([exp(-t)+ t, t=-2..2]);

Maple 13 gives me back the expression, but no plot. 

Please help.  Thanks in adance.

 

I stumbled upon some maple:isms when trying to rewrite some rather simple but tedious (and long) expressions in some filter design I'm working on that it is easy enough (but error prone..)  to do by hand.

Let's illustrate with a trivial example. How can I force maple to do roughly the following simplification

I'm using maple 11. I found today a wield thing happened when I assigning values to a list.

When Maple was just started, everything is working well. But after several operations, error messages shown bellow appeared. If restart the Maple, everything went well again.

Hi,

I'm a newbie with Maple 13, Student edition. 

 

Typed:

plot ( [ 1 + sqrt(t)] );

Maple 13 gives me a graph. 

<p>sys := [diff(v(s, n), n)+diff(u(s, n), s)+diff(xi(s, n), s)+A*n*(diff(c(s), s)) = 0, A1*(diff(xi(s, n), n))+diff(v(s, n), s)-c(s)+A2*v(s, n)+A3*c(s) = 0, diff(u(s, n), s)+2*A2*u(s, n) = A2*(xi(s, n)+A*n*c(s))-A1*(diff(xi(s, n), s))-A2*n*c(s)] The dependent variables are v,u and xi and the boundary conditions are: bc := {u(0, n) = 0, v(s, -1) = 0, v(s, 1)} other things: -1<=n<=1. I tried ans := pdsolve(sys, bc, xi(s, n), u(s, n), v(s, n)) i also tried ans := pdsolve(sys, bc) I keep getting error messages about the dependent variables.

I have Maple 13 and am having trouble using multiple cores.... My CPU AMD Phenom x945 has 4 cores....

I generated some code in an attempt to use more than 1 core. However, CPU usage is only at 25%.

N := 6000
M := RandomMatrix(N, generator = -.1 .. .1, density = 0.5e-1)
P := RandomMatrix(N, generator = -.1 .. .1, density = 0.5e-1)
Q := MatrixMatrixMultiply(M, P)
MatrixInverse(Q)
A = M+P

CPU usage is only at 25% suggesting only 1 core is used.

In Maple's Help system there is an icon to switch the Examples from 1D Maple notation input to and from 2D Math input (the default).

Why is the 2D Math form of the Help Examples in red? That doesn't match the any of Maple's interfaces' entry modes, does it? Shouldn't the input be in black, to match what appears to be 2D Math input in Worksheet mode?

Also, the 2D Math form of the Help Examples loses inlined explanatory comments. For example, on the modp1 help there is this, in 1D Maple notation...

I am trying to solve these equations but I dont know how...

> sys := [diff(v(s, n), n)+diff(u(s, n), s)+diff(xi(s, n), s)+A*n*(diff(c(s), s)) = 0, A1*(diff(xi(s, n), n))+diff(v(s, n), s)-c(s)+A2*v(s, n)+A3*c(s) = 0, diff(u(s, n), s)+2*A2*u(s, n) = A2*(xi(s, n)+A*n*c(s))-A1*(diff(xi(s, n), s))-A2*n*c(s)];

 

print(`output redirected...`); # input placeholder

 

 

 Data:

My name is Darin Ohashi and I am a senior kernel developer at Maplesoft. For the last few years I have been focused on developing tools to enable parallel programming in Maple. My background is in Mathematics and Computer Science, with a focus on algorithm and data structure design and analysis. Much of my experience with parallel programming has been acquired while working at Maplesoft, and it has been a very interesting ride.

In Maple 13 we added the Task Programming Model, a high level parallel programming system. With the addition of this feature, and a few significant kernel optimizations, useful parallel programs can now be written in Maple. Although there are still limitations and lots more work to be done on our side, adventurous users may want to try writing parallel code for themselves.

To encourage those users, and to help make information about parallel programming more available, I have decided to write a series of blog posts here at Maple Primes. My hope is that I can help explain parallel programming in general terms, with a focus on the tools available in Maple 13. Along the way I may post links to sites, articles and blogs that discuss parallel programming issues, as well as related topics, such as GPU programming (CUDA, OpenCL, etc).

My next post, the first real one, I am going to explain why parallel programming has suddenly become such an important topic.

I was wondering how I can get the equation for Probability Density Function (PDF) for a variable x which follows

a normal distribution with mean 0 and stdev 10 but also has a stop at -10 (ie all x's that are more negative

than -10 becomes -10). I can plot such a function with the below code but I dont know

how to extract the equation for the PDF...humm

 

I'm trying to plot directly the result of a solve, using the following syntax:

plot(solve(diff(E,N)=0,N),Z=0..20);

( E is dependant of Z and N )
 

it works for an equation that has only 1 solution. But, when using an equation with two solutions, it only plot one of the solutions. Of course, it is always the solution I don't want.

I've tried solving this problem by forcing N to be above 0 ( the unwanted, but always plotted solution is negative ):

 

plot(solve({Ep-E=0,N>0},N),Z=0..20);

Dear experts, do you know how I can color and grid the surfaces/sides of the coordinate system when plotting a 3d plot?

Hello,

I am using the LinearAlgebra package, and I am dealing with very big square matrices (almost a hundred rows and columns).  They have a lot of eigenvalues, with high multiplicity.  

I am performing operations on the eigenspaces.  So what I would need is a matrix with as columns a basis with eigenvectors for a very specific eigenvalue.

I can of course use SubMatrix(Eigenvectors[2],....) but that would take ages and Eigenvectors gives the eigenvalues in an ever changing order.