Maple Questions and Posts

These are Posts and Questions associated with the product, Maple

 

 

How can I find the corresponding group for the Lie algebra given in the picture (using Maplesoft software)?

Also, the command Lies Third Theorem works only for Solvable representations. What to for unsolvable representation.

Given two sets of lie algebra data, How to check, using maple software, that these lie algebras are isomorphic?

for example : 

The two sets of lie algebras are given as : L1 := [[e1, e4] = e1, [e2, e3] = e1, [e2, e4] = e2]

and

L2 := [[e1, e2] = e1].

Hi there,

Could you help me with Harley's norm computation algorithm that is based on the Fast Extended Euclidean Algorithm that was suggested by Harley in an email to NMBRTHRY list in 2002 and that described in Vercauteren's thesis pp 87-90:

https://pdfs.semanticscholar.org/c945/c98267db064b272c87a885fc5eeb764b0b2d.pdf

enter image description here enter image description here

My implementation working correctly and fast for low degree polynomials without modulo and for high degree polynomials with modulo M, where M is a prime number greater than 2^N. But all I need - it's a resultant modulo 2^N (or 2^(Nc) due to Vercauteren's Remark 3.10.3) of two large polynomials. So I should include in routine mod 2^N (or mod 2^(Nc)...) instructions to avoid exponential coefficients' growing. But since the 2^N is not prime it's a problem - polynomials contain even coefficients and this leads to some even denominators - and for example multiplicative inverse 1/2 mod 2^N doesn't exist. Please tell me how to solve this problem?

How to adapt XGCD routine for correct mod 2^N calculation of resultant (norm)?

Thank you.

mod prime version of XGCD:

XGCD.mw

Suppose that a function f  has derivatives of all orders at a.  The the series

 

∑=(f(k)(a)/(k!))*(x−a)^k (limits are infinity and k=0, i donot how to insert that)

is called the Taylor series for f  about  a, where  f(n) is the n th order derivative of  f.

 

Suppose that the Taylor series for e2 x sin(5 x) about 0 is

a0+a1x+a2x2+⋯+a8x8+⋯

 

Enter the exact values of a0 and a8  in the boxes below.

      a0=   Preview   

     a8=   Preview   

Use Maple to find the solution of the initial value problem

y*(d^(2)*y/d*x^2)+(dy/dx)^2=0 0 with initial conditions y(0)=5and y'(0)=8.

Using Maple syntax, type in your answer in the box below, or copy (Ctrl-C) from your Maple worksheet and paste (Ctrl-V) in the answer box the solution. Do NOT enter the y(x)= part of the Maple output.

Why is pdsolve's 'generalsolution' option giving the particular solution u(x, y) = 0 instead of the general solution u(x, y) = A sin(x) sin(2 y) + sin(2 x) sin(y) for the attached problem?

Problem.mw

A is a 2 x 2 matrix with eigenvalue, eigenvector pairs:

5,<4,1> and 1,<3,4>.

1. Find an invertible matrix M and a diagonal matrix D such that A=MDM^(-1).

M=   Preview                                       D=   Preview   

2. For any integer n, find the matrix A^n   as a single matrix (i.e. explicitly entry-by-entry). Use Maple notation for a matrix.

   An=   Preview    

(Hint: compose your answer in Maple to make sure your syntax is correct and your answer is what you think it should be.)

Let A be an m×n matrix. The image of A  is the set of vectors

 

im(A)={y:y=Ax for some x∈Rn} ,

 

which is a vector space.

The dimension of im(A)  is called the rank of A, denoted by rank(A) .

(a)  Find the rank of the matrix 

v1:=<-146, -84, 28, -154>

v2:=<-203, 106, 34, -181>

v3:=<-94, -4, 106, -154>

v4:=<-36, 152, -86, 50>

v5:=< 173, 122, -390, 435>

A:=<v1|v2|v3|v4|v5>;

and enter in the box below.

rank(A)=    

(b) For the matrix A in (a), select all the statements below which are true.

(1) <97,-8,-49,-66> is in im(A)

(2) <-65,74,10,-52> is in im(A)

(3)im(A) is subspace of R^4

(4) <2,-2,-4,4,-2> is in im(A)

(5) <0,0,0,0> is in im(A)

(6) <0,0,0,0,0> is in im(A)

(7) <-1,-2,1,-2,1> is in im(A)

(8) im(A) is a subspace of R^5

Let A be an m×n matrix. The kernel of A  is the set of vectors

ker(A)={x:Ax=0} ,

which is a vector space.

The dimension of ker(A)  is called the nullity of A, denoted by nullity(A) .

   (a)  Find the nullity of the matrix 

v1:=<136, 40, 124, -94>

v2:=<-74, -54, 150, 99>

v3:=<-104, 68, 196, -134>

v4:=<-38, -142, -108, 280>

v5:=<342, -326, -634, 635>

A:=<v1|v2|v3|v4|v5>

and enter in the box below.

nullity(A)=     

      b) For the matrix A in (a), select all the statements below which are true.

 (1)  <71, -37, 44, 73> is in ker(A)

 (2) <-1,1,2,-2,1> is in ker(A)

 (3) <0,0,0,0> is in ker(A)

 (4) <0,0,0,0,0> is in ker(A)

 (5) ker(A) is a subspace of R^5

 (6) ker(A) is a subspace of R^4

 (7) <95,-72,-85,-12> is in ker(A)

 (8) <2,4,-2,4,-2> is in ker(A)

 

 

 

What is the best way to get some one on one training in maple , has anyone done this?

 

Download Analisa_Dinamik_Limb_v1_(30).mwAnalisa_Dinamik_Limb_v1_(30).mw

So I have an equation that basically takes the component of vectors to be used as an equation. The variables that I after are FB1z, FB2x, and FB3y For example here is my equation: 

EOM1:=(AFB1[1]+AFB2[1]+AFB3[1])=TEOM[1]

EOM2:=(AFB1[2]+AFB2[2]+AFB3[2])=TEOM[2]

EOM3:=(AFB1[3]+AFB2[3]+AFB3[3])-TEOM[3]:

FBBp1:=FBPP1=(EulP1[1]+EulP2[1]+EulP3[1]):
FBBp2:=FBPP2=(EulP1[2]+EulP2[2]+EulP3[2]):
FBBp3:=FBPP3=(EulP1[3]+EulP2[3]+EulP3[3]):

However there are unknown variable in AFB2[1] named FB2x and AFB3[1] named FB3y. Then AFB1[2] has unknown equation named FB1z and AFB3[2] has FB3y and so on. While in my FBBp1,FBBp2,and FBBp3 holds all of the variable of FB1z, FB2x, and FB3x
I have tried to use 'solve' command to find the variable but my computer won't stop processing it:
sls:=solve({EOM1,EOM2,EOM3,FBBp1,FBBp2,FBBp3},{FB1z,FB2x,FB3y}):

I tried to use the Gauss-Elimination by forming a matrix but it doesn't work as well since I am really confused how to take out the variables out of the vector component.

zzz:=Matrix([0,AFB2[1],AFB3[1],jjj[1]],[AFB1[2],0,AFB3[2],jjj[2]],[AFB1[3],AFB2[3],0,jjj[3]],[FBP1[1],FBP2[1],FBP3[1],EulP[1]],[FBP1[2],FBP2[2],FBP3[2],EulP[2]],[FBP1[3],FBP2[3],FBP3[3],EulP[3]]):
GaussElimination:=(zzz)

I would be very grateful If someone could help me. Thankyou

 

Edit: here are the .txt files and .mpl files that required to run the program 

Inverse_Kinematics_ADRIAN2.mw

RotInertiax0_ADRIAN.txt

Download DisplacementXYZ.txt

inersia_platfrom.txt

There is an .mpl file that I couldn't upload so I will upload it in the comments

 

According to the help manual...

To perform an action when the data table is updated, click the data table, and then, from the Data Table context panel, select Edit Content Changed Code to open the Code Editor dialog for the data table.

I am unable to make this work, nothing happens when I click on that button.

Edit - Component code - shows everything greyed out.

Any hints?

Since I've updated maple to version 2019 it's has become very slow. Erverytime I enter something it seems to reload all the side buttons just like when a new worksheet is started. This is very annoying because during this loading time you cannot enter anything. Has anyone any suggestions? btw I've bought my pc in march 2020 and it has enough CPU and GPU.

 

 

I am not able to get the proper integration results

Question_integration_eqn18.mw
 

Dm(A, p, i(t)) := A^gamma*(a-b*p+c*i(t))

A^gamma*(a-b*p+c*i(t))

(1)

NULL

NULL

Lsc := cl*(int(Dm(A, p, i(t))*(1-1/(1+delta(T-t))), t = t2 .. T))

cl*(int(A^gamma*(a-b*p+c*i(t))*(1-1/(1+delta(T-t))), t = t2 .. T))

(2)

simplify(Lsc)

cl*A^gamma*(int((a-b*p+c*i(t))*delta(T-t)/(1+delta(T-t)), t = t2 .. T))

(3)

``

subs(i(t) = (A^gamma*(-b*p+a)*ln(1+delta*(T-t))-R*delta)/delta, Lsc)

cl*(int(A^gamma*(a-b*p+c*(A^gamma*(-b*p+a)*ln(1+delta*(T-t))-R*delta)/delta)*(1-1/(1+delta(T-t))), t = t2 .. T))

(4)

simplify(%)

cl*(int(-(-A^(2*gamma)*c*(-b*p+a)*ln(1+delta*(T-t))+A^gamma*delta*(R*c+b*p-a))*delta(T-t)/(1+delta(T-t)), t = t2 .. T))/delta

(5)

``

``


 

Download Question_integration_eqn18.mw

 

So, here again, I'm still having this problem with Maple 2020 on Machbook OS 10.13.6 (all updates have been performed): Maple 2020 does not start. I see an icon appearing in the dock but it then disappears soon without showing anything like splash something. I reinstalled and restarted the copmuter several times, reactivated the software several times (always successful), and still I'm having the problem. I installed java and then it worked for one time, but after that the same problem happens and I'm still having this issue.

I went through steps suggestged in the help and arrived at JAVA reisntallation. What else can I try? 

Please help me. Thanks.

Hiro

 

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