MaplePrimes Questions

Is there a way to execute an entire worksheet for a list of values of a parameter.
Sometimes executing in the standard loop can be cumbersome given you have to add catch statements for errors to prevent the loop from stopping.

Hi,

I'm not able to find a way to bring an equation into it's "polynomial" form:

I'd like this expression in the form of:

c1*v^3+c2*v^2+c1*v+c0 = 0

where c1...c4 are my coefficients

How can I do that? 

Hello guys
I'm having trouble converting the RootOf function. Attached is a simple notebook.

Sincerely,

Oliveira

Example.mw

Dear Maple Users:

Could you help in the following question?

How do I use a symbol as a subscript, e.g.  A_*, to label an axis?

X := vector([seq(x, x = 1 .. 5)]);
Y := vector([seq(x, x = 6 .. 10)]);
X[1];
Y[1];
Yfactor := evalf(X[`1`])/Y[`1`];
evalf(Yfactor);
                      X := [1, 2, 3, 4, 5]

                     Y := [6, 7, 8, 9, 10]

                               1

                               6

                                         X[1]
                        Yfactor := -------
                                         Y[1]

                              X[1]
                              ----
                              Y[1]

m := 1;
X := vector([seq(x, x = 1 .. 5)]);
Y := vector([seq(x, x = 6 .. 10)]);
Yfactor := X[m]/Y[m];
evalf(Yfactor);
                             m := 1

                      X := [1, 2, 3, 4, 5]

                     Y := [6, 7, 8, 9, 10]

                                           1
                          Yfactor := ---
                                           6

                          0.1666666667

hi guys,

suppose we have general metric form in 4-D. I want to calculate Covariant derivative of Riemann, Ricci and Weyl tensors.

please help me.

with best,

I dont know why I could not solve this problem.

I have attached my worksheet.

Please anyone help me to get solution to this problem.

Thank you so much

fypppp.mw

DLMF offers different encodings for mathematical expressions. Example:

 

I was wondering if TeX or pMML (never seen before)  can be imported into Maple and subsequently be used as  Maple Input.

When taking notes I sometimes use the palette to insert a matrix into a worksheet. When I do this, the main aspect that is useful to me is being able to visualize matrix expressions as I would write them.

I would like to do the same but for determinants of matrices. Is there a way to get almost the same thing as with the matrix palette, but with vertical bars denoting a determinant rather than the brackets used for matrices?

How do we compute integrals of functions or expressions that have units attached?
For example

v__1 := proc (t) options operator, arrow; 3*Unit('m'/'s') end proc

proc (t) options operator, arrow; 3*Unit('m'/'s') end proc

(1)

v__2 := 4*Unit('m'/'s')

4*Units:-Unit(m/s)

(2)

s__1 := int(v__1(t), t = 0 .. 5)

15*Units:-Unit(m/s)

(3)

s__2 := int(v__2, t = 0 .. 5)

20*Units:-Unit(m/s)

(4)

NULL


The results of the integrals have the wrong units.

Download integration_with_units.mw

I have X=+-1,

and I want to calculate X^n.

 Thank's

Dear members of the forum, please tell me if it is possible to calculate the series presented below by Maple 2022. As far as I understand, first you need to calculate the inner and then the outer sum, but I don’t know how to do this with the help of the program, this series does not converge, as it seems to me, but I can be wrong, if the series diverges, then I need to show it.

Sorry for my ignorance, but maybe I wrong apply such commands for calculation this sums:

Sum(F, a = 1 .. infinity, b = 1 .. infinity) = DefiniteSummation(F, a = 1 .. infinity, b = 1 .. infinity)

I understand, that Sum () not be able to recive more than one args, but I don't understand how to make this calculation...

Any idea? Thanks for advices and help!

Dear All,

I have an executable program which I have generated with Fortran. Is it possible to run such a program from Maple? It sounds a bit weird but that would simplify my computation, since I would not need to use scripts in Linux. Thank you very much.

Cheers.

Let's say we have four equations and four unknowns and we use solve to find a solution.

The return value of solve is a set.

Here is an example

solve({T__1 = m__1*a, a = R*alpha, -R*T__1+R*T__2 = I__s*a/R, g*m__2-T__2 = m__2*a}, {T__1, T__2, a, alpha})

{T__1 = R^2*g*m__2*m__1/(R^2*m__1+R^2*m__2+I__s), T__2 = m__2*g*(R^2*m__1+I__s)/(R^2*m__1+R^2*m__2+I__s), a = R^2*g*m__2/(R^2*m__1+R^2*m__2+I__s), alpha = R*g*m__2/(R^2*m__1+R^2*m__2+I__s)}

(1)

NULL


If we want to make the four expressions above procedures, the manual way is to basically copy the right-hand side of each expression and then write

T__1 := (R,m__1, m__2, g, I__s) -> ...

T__2 := (R,m__1, m__2, g, I__s) -> ...

a := (R,m__1, m__2, g, I__s) -> ...

alpha := (R,m__1, m__2, g, I__s) -> ...

Is there a way to do this automatically from the return value of solve?

If the return value were a list, I would use something like

T__1 := unapply(result[1], R, m__1, m__2, g, I__s)

T__2 := unapply(result[2], R, m__1, m__2, g, I__s)

a := unapply(result[3], R, m__1, m__2, g, I__s)

alpha := unapply(result[4], R, m__1, m__2, g, I__s)

But the return value is not a list.

So, in summary my quesions are

1) what, in general, is the best way to obtain the desired procedures?

2) is there a way to use the strategy I suggested if the result were a list, but for sets?

Download solveEqs.mw

i need to differentiate this equation 

Potential energy eq:
p := (m1*a1 + m2*(a123 + z(t)))*sin(theta(t))*g + m3*(sin(theta(t))*(a1234 + z(t)) + cos(theta(t))*a5)*g;


  p := (m1 a1 + m2 (a123 + z(t))) sin(theta(t)) g    + m3 (sin(theta(t)) (a1234 + z(t)) + cos(theta(t)) a5) g

i have tried these 2 methods

diff(p, theta)

diff(p, theta(t))

but both of them comes out 0 

where they should give 

diff((m1*a1 + m2*(a123 + z))*sin(theta)*g + m3*(sin(theta)*(a1234 + z) + cos(theta)*a5)*g, theta);


       (m1 a1 + m2 (a123 + z)) cos(theta) g + m3 (cos(theta) (a1234 + z) - sin(theta) a5) g

how is the syntax for partial differentiating a pre defined equation dependent on time.

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