Maple 2022 Questions and Posts

These are Posts and Questions associated with the product, Maple 2022

So my file got corrupted, i have no clue how to fix it. The file i was able to restore from OneDrive is 2 days old and is missing most of the information, i only have the backup files for the later version. Is there someone with expertice who can help me out? 

Hi everyone!

I'm double checking a result from maple.  When I substitute maple's solution into the differential equation, left side does no equal right side.  Does anyone have some insight into this?

thanks

the maple file is below

is_this_correct.mw

For a system of 8 equations, it takes too long for me to solve it by using solve, but I can only give one solution by using fsolve. If I want solutions in other ranges, I need to provide a general range, but I don't know the range, how can I quickly find all the solutions?question1118.mw

I’m working on deriving the equation of motion (16) from equation (9) (see attached image), but I’ve encountered a couple of issues in Maple. i) The variational derivative of Lagrangian, and ii) the commutator is zero, which isn’t expected.

How do we fix these issues? Are there any specific packages regarding the construction of Lagrangian?

VariationDerivative.mw

How do you convert this system of equations into matrix form? The decoupling process is performed.Convert the equations into photographs.fuxian1030.mw

Can we find the conditions on A1, A2, B1, B2, beta1, and beta2 for which numerator of Eq. (1) is zero? ss.mw

How can I solve this function faster? solve the solution is more accurate, but the solution speed is too slow, the use of fsolve to solve the speed is faster, but the solution is not accurate, what is the solution fast and accurate?question11.mw

I can't understand why Maple interprets 1 .05  as 1 * 5 = 5 , and 2 .05  as 2 * 5 = 10 . Note the space between 1 and .05
In a different calculation I accidentally inserted a space between 1 and .05, and received a strange answer, and finally narrowed it down to a space.
But now I wonder why it is it is interpreting this way. Also I see that 2  0.05 produces an error. But  2 .05 is treated as 10. There is an implied multiplication? But the multiplication should be 2 * .05 , which is 1 and not 10.

Hi, I have plotted the bar graphs, and it's fine but I am interested in showing the value on each bar. How to implement this. As an example, I uploaded a picture for convenience.

Bar_graphs.mw

How to convert this mathematica code to Maple code? Is there any command? NN.pdf

I have encountered an issue: eq1 is not satisfied, though eq2 is satisfied for the parametric value (10). I need assistance in finding a way to ensure that both equations are satisfied simultaneously. Please provide guidance or suggest a potential approach for addressing this issue.verf_kk.mw

How can I substitute equation (5) into equation (4) to obtain the final form [see image in BE.mw]?

Additionally, how can I use subscript notation for derivatives, such as expressing diff(f(tau,sigma), tau)  as  f[tau]​?

By using the 'declare' command in Maple, one can utilize subscript notation. However, in this case, the function must be written in terms of τ and σ on each step.

Could anyone help me to convert a code written in Mathematica to a Maple worksheet? I have PDF only. Could any one have a look on Mpale sheet and PDF....

Mathematica__to_Maple.mw

Mathematica_file.pdf

aa1.mw      aa2.mw 

In my view, these two processes are similar, but they yield different outcomes. What accounts for this discrepancy?

How to collect coefficients of eta^j, j=0,1 from (7)?

restart

with(LinearAlgebra)

with(plots)

with(Physics)

interface(showassumed = 0)

Setup(mathematicalnotation = true)

[mathematicalnotation = true]

(1)

quantumOperators := {H, Id, Mqu, Mqu1, Theta, X, X1}

{H, Id, Mqu, Mqu1, Theta, X, X1}

(2)

Setup(quantumoperators = quantumOperators)

[quantumoperators = {H, Id, Mqu, Mqu1, Theta, X, X1}]

(3)

assume(x::real); assume(t::real)

alias(q = q(x, t), qb = qb(x, t), r = r(x, t), rb = rb(x, t), psi = psi(x, t), phi = phi(x, t), g = g(x, t), gb = gb(x, t), H = H(x, t), X = X(x, t), X1 = X1(x, t), Theta = Theta(x, t), eta = eta(t), Mqu = Mqu(x, t))

q, qb, r, rb, psi, phi, g, gb, H, X, X1, Theta, eta, Mqu

(4)

``

NULL

D1 := (Id*eta-H).X

eta*Physics:-`*`(Id, X)-Physics:-`*`(H, X)

(5)

D2 := diff(D1, x); D3 := subs({diff(X, x) = Mqu}, D2)

eta*Physics:-`*`(Id, diff(X, x))-Physics:-`*`(diff(H, x), X)-Physics:-`*`(H, diff(X, x))

 

eta*Physics:-`*`(Id, Mqu)-Physics:-`*`(diff(H, x), X)-Physics:-`*`(H, Mqu)

(6)

D3+D1 = D1*Mqu1

eta*Physics:-`*`(Id, Mqu)-Physics:-`*`(diff(H, x), X)-Physics:-`*`(H, Mqu)+eta*Physics:-`*`(Id, X)-Physics:-`*`(H, X) = Physics:-`*`(eta*Physics:-`*`(Id, X)-Physics:-`*`(H, X), Mqu1)

(7)

collect(coeff, eta, 1)

1

(8)

collect(coeff, eta, 0)

0

(9)
 

NULL

Download coefff.mw

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