Maple 12 Questions and Posts

These are Posts and Questions associated with the product, Maple 12

Minimise(eq1, {eq2>=0,eq3>=0,eq4>=0, a1<>0,a2<>0,a3<>0,a4<>0})

can not handle strict inequalities error



Is there extendable combinatorics experiment architect system design

such as new method can combine or use with old method and find relationship between them , these kind of big data system design in combinatorics experiment design?


I have an optimization problem subjects with a system of ordinary differential equations with initial conditions.

I would like to obtain u^star, x^star and y^star solution of my problem 

I prefer if possible we implement hamilton jacobi bellman if possible




how to express eigenvector or eigenvalues in terms of fibonacci or lucas or golden ratio?

fibonacci ratio has many 

f(n)/f(n-1) , all eigenvector can not divided by any one of them


how to verify lambda calculus is computable and realizable in maple?

is it possible to realize lambda calculus into algebra ?

how to use β-reduction to convert algebra function into lambda calculus?

is there a way to convert back ?

how to combine multiple lambda calculus into one lambda calculus and check computable and then convert back to algebra function?

Which sorting related with famous sequence

for example 

sorting differential equation in a list

then access the list with famous sequence as index such as using

after access with sequence as index, use choose function to get combinations then most result are isomorphism differential ideals?

is there methods about this sorting in Richard Stanley Combinatiric book? which page of it?

Last month I still can read file


read “c://Users//hello//Documents//h.m”


now it return error

no read access c://Users//hello//Documents/


in security I add the m file into readable 

I saw open file at c drive has many shell folders 

i just add m file

but still the same error

i unencrypted m file by window properties

still the same error

i save file into maple roaming directory under 12 folder , still the same error

i save into maple installation directory maple 12 , still the same error

How to calculate potential function of Maxwell equations?

is there calculation examples of strong and weak force examples too?

which library can calculate intersection numbers of familes of potential function of Maxwell equations?

is there any examples?

I use indices of Table


but it return 3,6

how to keep [3,3,3,6,6]?

any other method for indices?

any non hash table which map value to value?

It is necessary that the expressions are combined in a new function. So as I'm trying not is obtained.

restart; x := 5; y := 10; f := proc (x, y) options operator, arrow; x+y end proc; f2 := proc (x, y) options operator, arrow; x^2+y^3 end proc; f3 := proc (x, y) options operator, arrow; f+f2 end proc; f3(x, y)





proc (x, y) options operator, arrow; x+y end proc


proc (x, y) options operator, arrow; x^2+y^3 end proc


proc (x, y) options operator, arrow; f+f2 end proc







Hello everyone,

Even using the command "discont=true", some of the functions I plot still present discontinuities, but some of them do not present.

How can I fix this? This one file ilustrates perfectly the problem.

I have a similar matrix.

Build through matrixplot, not exactly what I need to get. I need a way to plot without zero values on the graph.

I want to plot all three "roots" of the polynom I called 'H[i]' for different values of 'V', in the interval k=0.0..1.0, all in the same plot.

How can I do it, both for real and imaginary parts of H[i]?

Thanks for your help.

the function rationalize simplify rational expression that contains complicated expression but in this example it doesn't work



it gives to me the same expression why ?


how to find back the system which solution is maxwell equations?

as maxwell equations is an invariant, 

if solution is maxwell which is invariant, how to find back the system which solve it, the solution is maxwell?

will there a multiple systems which solution is maxwell equations?

if can not find, how to enumerate all combinations of systems to search maxwell equations?

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