Hello,

I'm new as to write programs in Maple.

My problem is: How can i write program code into an empty worksheet?

How can i insert new commands into an existing program/procedure?

What do i have to do?

Can you help me please for my first steps, i didn't find any helpful information about this.

Thanks in advance

Volker

Hi, I am new to Maple 2017. I would appreciate advice on how to plot the following integral over the range a = -10 to a = 10

I(a):=int(exp(-x^2)*sin(a*x),x=0..infinity)

Thank you.

Aidan

Where I can found inverted pendulum on maple sim or good book?thanks

Enter the matrix

To prevent typing errors you may copy and paste following Maple command for entering A.

A := Matrix([[4, 7, 5, 2, 6, 4, 9, 7, 5, 8, 5], [7, 7, 3, 9, 4, 5, 2, 3, 5, 6, 8], [5, 6, 5, 6, 6, 3, 7, 4, 9, 1, 9], [9, 1, 4, 8, 9, 4, 4, 2, 1, 3, 3], [5, 6, 8, 2, 2, 1, 2, 9, 5, 4, 1], [4, 7, 9, 6, 9, 2, 3, 5, 6, 3, 5], [7, 2, 5, 7, 3, 4, 9, 8, 1, 8, 9], [5, 7, 1, 2, 7, 9, 9, 2, 2, 4, 7], [1, 6, 5, 3, 9, 9, 1, 5, 7, 4, 2], [3, 7, 8, 7, 8, 3, 6, 4, 6, 9, 2]]);

[Note that Maple does not display the full matrix when it has more than 10 rows or 10 columns.  However, you can still work with the matrix using Maple commands.]

Use Maple to create the vector b that is column 6 from A and the matrix C that is made from columns 1 to 5 and 7 to 11 of A (in the same order as the columns of A).

Now solve the matrix equation

C x = b

and enter the 6^th component of the unique vector solution for x in the box below.  (Your answer should be an exact fraction, not a decimal)

The answer is 63695593/46022164

Can someone help me out?

Cheers.

The question is to find principle argument of the 5 roots of the polynomial z^5-5*z^4-z^2-2 

I used the Maple command:

Solve(z^5-5*z^4-z^2-2);

evalf(%);

argument(%);

But the Maple told me that expecting 1 argument but got 5.

I want to find all the argument and then use Max command to find the principle argument...it's doesn't work

Another similar thing is to find the moduli of a 5 roots of the polynomial z^5-5*z^4-z^2-2 

I got the same error as previous one ..

Can someone help me out ?

Cheers.

The question is to fin limit (n^1.5)*sum of 2*k/(2*k+3) k=1 to n as n goes to infinity 

I got the answer is float infinity...

How can I get a correct answer ？

Can someone help me out .

Cheers.

The question is to find integral of [e^(-x)*sin(x^2/)]/(2+x) from x=1 to infinity.

I typed in Maple and used evalf(%) 

But I got a float(infinity) on the upper limits instead of a correct numeric answer...

Can someone help me ?

Cheers.

1. Where do we report potential bugs

2. My finding:

https://imgur.com/a/w688r

The image uploading on this forum is not letting me and I find it to be less user friendly. Please view the sequence of images in the given link above.

This is not a problem, just my finiding.

applyrule(a::integer = 0, x = 1);
                             x = 1

applyrule(conditional(a::anything, a::`=`) = 0, x = 1);
Error, (in PatternMatching:-AlgStruct:-TableLookup) testing against an invalid type

Why doesn't applyrule do a replacement inside (x=1) and why is `=` an invalid type?

type(.5, rational);
                             false
is(.5, rational);
                              true
is([.5], list(rational));
                             false

is(.5, rational) seems to be the odd one out.

Hello all,

I have a vector with 3 rows and each row is an equation with 2 variables.  What I am wanting to do is simplify based on the leading coefficient of one of the variables to make the equation a monic polynomial wrt that variable, primarily because it will allow me to quickly check the eigenvalues of the system.  Here is a basic example of what I want to do:

2*x+1 --> x+1/2

Any ideas? Ive tried combinations of simplify, factor, and collect and have gotten nowhere.

Hello everyone,

I need to expand this:

>abs(u+v)^2+abs(u-v)^2

so I have as a final expressioin

>|u|^2+|v|^2=1

This is the property that has to be true so the probability is one.

>assume(u::complex, v::complex);  does not work and the simple commande

>expand() neither.  Any idea?

Let us assume we have a square matrix $A$ with known entries. We know the system is asymptotically stable by inspection of the eigenvalues, hence we know that the Lyapunov equation

A^TP+PA=-Id

will have a symmetric matrix P as a solution with Id being the identity matrix. How can I obtain the entries of the P matrix? I have tried the following code but was not able to solve for the entires of the P matrix.

I would be happy if someone could share a solution to this problem.

gc();
restart:

with(LinearAlgebra):

A := <<a__11|a__12>,<a__21|a__22>>;
P := <<p__11|p__12>,<p__12|p__22>>;
Id := <<1|0>,<0|1>>;
eqn := Transpose(A).P+P.A = -Id;

I am having a problem with image tools read a file from workbook.

In one document i get

Read("this:///101-Escher.bmp");
Error, (in ImageTools:-Read) unable to open database file

In another document I cant save the file. 

Please find my error in the doc which produces outputlines always. Is there any otherway (other than view -  show contents and uncheck output which hides all other outputs as well in a programm) by commands, which can suppress these output lines.

Also is there any other way of giving continuously varying inputs (and visible in RotaryGauge ) like sin wave form (0 to 8 to 0 in a period) ?

Download varying_input.mwvarying_input.mw

?