MaplePrimes Questions

Augh, this is hurting my brain.  This homework assignment (still the same one as before) is my first experience with Maple.  I'm trying to learn the semantics of the language as I go, and that's been going well for the most part, but there's this one thing that has been bugging me to absolutely NO END:  Logical operators.

Here's what I understand after a lot of internet searching and Help browsing:
-There's two sets of very similar operators. ...

I was trying to solve 3 equation with 3 unknown. After solving the problem by Maple, I put the answers in the primary equations and I expected  the result for each equation be zero. I did it just for testing the correctness of answers.  But unfortunatly one of the answer is not zero. What is the problem? I attached my worksheet to this post. Improved_GU.mw

 

With the bests

Vahid

 

Got the script below, was trying to plot data from excel in maple and get a curve fitting. i was trying to get the residual meansquare for the curve fitted (last line script), but the script did not return anything. see attached. please let me know what was wrong.

 

hello

This is what I have written out in Maple, and I have been trying to plot into a graph, but am having no luck at all.  Do you have any advice for what my next step should be. I'm using a simplified version of Brain and Cousens model.

> restart;

> with(plots);

> with(Statistics);

y := (x) -> (d+fx)/(1+h*x^b) , x > 0

b := 2; d := 1; h := 1;

This is the question: Let b = 2, d = 1 and h = 1 

Hi

The attached document is my Mat assignment. When I open the file, it says that "There were problems during the loading process. Your worksheet may be incomplete." And it only shows a blank worksheet. The worksheet has been created in Maple 13 and modified in Maple 14. The problem occurred then I made the last part of the assignment! Is there any way to retrieve the file?

I hope you can help me...

 

Regards

 

limit(y(x), x = -infinity) = signum(-8*ln(2)+_C1)*infinity

 

that was my ouput. I'm just trying to take the limit as x goes to -inf, as you can see.

 

Does it just mean that my graph is diverging as x goes to negative inf?

 

thanks!

How would I plot the following complex function?

f(z) = z2 , Domain = {z = x + iy | x < 0 and y > 0}

Hi,

Im trying to plot the piecewise function that looks like this:

(1-x^2)/((x-1)(x-3)) for x<1 and x>3

x for x=1..3

 

I have entered the function like this:

f:=x-> piecewise(x < 1, ((1-x^2)/(x-1)(x-3)), x = 1 .. 3, x, 3 < x, (1-x^2)/(x-1)(x-3));plot(f);

And plotting it with:

plot(f);

And then i get this result:

Hello, I'm new to Maple and I'm having some difficulty using the program.

 

So I'm asked to "Find the numerical (decimal) value of the function h'(x) for x = square root of 2."

I tried typing in: D(h)(sqrt(2.0)); however it returns: D(h)(√2)

 

I think I may have typed in my prior coding incorrectly.

> h := G(f(x));

> h := unapply(h(x), x);
 
> dh := D(h);
     ...

I tried to run a fairly simple list of commands:

 

weight := k -> if(k = 2, 1/2, 1)

sum(weight(m+2), m = 0 .. 0)

 

the expected result should be 1/2 - which is weight(2). But Maple returns 1 for some reason.

Is this a bug in Maple or did a make a mistake in my expressions?

 

Many thanks in advance

 I was told to "Make a plot of the function h(t) which shows all the intercepts, vertical asymptotes, and extrema that you have determined above." And how might I go about doing this?

I'm using Maple for a math project.  FYI, this is my first time ever using Maple, so I'm a complete newbie.  I'm lucky I even got as far as I did, because had I not stumbled upon the ? function, I'd still be stuck trying to figure out step 1.  Anyways, I entered this into a Maple document:

with(combinat, setpartition) :
P := {1, 2, 3, 4, 5, 6, 7, 8, 9, 10} :
setpartition(P, 1);
setpartition(P, 2);
setpartition(P, 3);
setpartition(P, 4);

Hello

I can't find a solution on the internet for this question.

I want to rotate a curve around the x-axis. That means a 3D plot.
Does anyone know how?

Thanks.

I worked a problem in my textbook using maple.I define two differential equations sys1:=[dy/dt=...,dx/dt=...] and its linearize point lin_point:=[...],then using linearize command,I obtained a state space description of the system.Now,I want to using state space description to get transfer function of the system,how can I do it directly without retype the state matrices a,b,c,and d manually?  

Thank you!

Hi

My computer has 6 GB RAM and works with Windows Seven 7 (64 bits). When I am running my MAPLE program(Version 12), the MAPLE software needs the large amount of memory. But when the consumed memory exceeds over 2 GB, the CPU and computation  stop. Even if I used the Command {kernelopts(datalimit)}, the software did not allow me to use the memory more than 2097100 KB.

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